Patent Publication Number: US-2022240404-A1

Title: Electronic apparatus

Description:
TECHNICAL FIELD 
     The present invention relates to an electronic apparatus. 
     BACKGROUND ART 
     Conventionally, a technique of fixing a cable in a back surface portion of a display device using a so-called “hook-and-loop fastener” has been developed (see, for example, Patent Literature 1). 
     CITATION LIST 
     Patent Literatures 
     Patent Literature 1: JP 2014-153534 A 
     SUMMARY OF INVENTION 
     Technical Problem 
     When an electronic apparatus is assembled, work (hereinafter referred to as “connection work”) of connecting a cable to a terminal in the electronic apparatus is performed. From the viewpoint of facilitating the connection work, it is preferable to use a cable having a so-called “extra length”. However, in a case where a cable having an extra length is used, when the cable is connected to the terminal, a part of the cable may protrude out of a predetermined region. In this case, from the viewpoint of avoiding the protruding portion from being caught by another member, the work of pushing the protruding portion into the predetermined region is required. Hereinafter, this work is referred to as “extra length processing”. 
     Here, although not described or suggested in Patent Literature 1, it is conceivable to use the fixing method described in Patent Literature 1 (hereinafter, referred to as a “conventional fixing method”) for fixing a cable inside an electronic apparatus. However, in the conventional fixing method, the extra length processing is not taken into consideration. For this reason, when the cable is connected to the terminal, there is a problem that the extra length processing is not performed, and a part of the cable may remain out of a predetermined region. In addition, even if the extra length processing is performed, after the protruding portion is pushed into the predetermined region, a so-called “return” occurs, so that the shape of the cable may return to the shape before being pushed in. As a result, there is a problem that the pushed-in portion may protrude out of the predetermined region again. 
     The present invention has been made to solve the above problem, and an object thereof is to provide an electronic apparatus having a structure for extra length processing. 
     Solution to Problem 
     An electronic apparatus of the present invention includes: a chassis and a substrate arranged to face each other; a cable disposed between the chassis and the substrate and having an extra length; and a plurality of dampers formed on the chassis and clamping the cable, in which the plurality of dampers includes a second damper fixedly clamping the cable and a third damper movably clamping the cable, the cable is fixed to the chassis by the second clamper, and the third damper limits a movable direction and a movable range of the cable in extra length processing of the cable. 
     Advantageous Effects of Invention 
     According to the present invention, with the above configuration, it is possible to obtain an electronic apparatus having a structure for extra length processing. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is an exploded perspective view illustrating a main part of an electronic apparatus according to a first embodiment. 
         FIG. 2  is an exploded perspective view illustrating a part of a chassis, a part of a cable, and a part of a substrate in the electronic apparatus according to the first embodiment. 
         FIG. 3  is a plan view illustrating a part of a chassis and a part of a cable in the electronic apparatus according to the first embodiment, and is a plan view illustrating a state in which a part of a substrate is seen through. 
         FIG. 4  is a cross-sectional view taken along line A-A′ illustrated in  FIG. 3 . 
         FIG. 5  is a cross-sectional view taken along line B-B′ illustrated in  FIG. 3 . 
         FIG. 6  is a cross-sectional view taken along line C-C′ illustrated in  FIG. 3 . 
         FIG. 7A  is an explanatory view illustrating an example of a state after a wiring work is performed and before a connection work is performed. 
         FIG. 7B  is an explanatory view illustrating an example of the connection work. 
         FIG. 7C  is an explanatory view illustrating an example of extra length processing. 
         FIG. 7D  is an explanatory view illustrating an example of a state after the extra length processing is performed. 
         FIG. 8  is an explanatory view illustrating an example of a state in which a plurality of cables is in contact with a protrusion. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Hereinafter, in order to explain this invention in more detail, a mode for carrying out this invention will be described with reference to the accompanying drawings. 
     First Embodiment 
       FIG. 1  is an exploded perspective view illustrating a main part of an electronic apparatus according to a first embodiment.  FIG. 2  is an exploded perspective view illustrating a part of a chassis, a part of a cable, and a part of a substrate in the electronic apparatus according to the first embodiment.  FIG. 3  is a plan view illustrating a part of a chassis and a part of a cable in the electronic apparatus according to the first embodiment, and is a plan view illustrating a state in which a part of a substrate is seen through.  FIG. 4  is a cross-sectional view taken along line A-A′ illustrated in  FIG. 3 .  FIG. 5  is a cross-sectional view taken along line B-B′ illustrated in  FIG. 3 .  FIG. 6  is a cross-sectional view taken along line C-C′ illustrated in  FIG. 3 . The electronic apparatus according to the first embodiment will be described with reference to  FIGS. 1 to 6 . 
     An electronic apparatus  100  includes, for example, a display device for an in-vehicle information device. That is, as illustrated in  FIG. 1 , a liquid crystal module  3 , a substantially plate-shaped chassis  4 , and a control substrate  5  are sequentially arranged between a front panel  1  and a rear cover  2 . In other words, the chassis  4  is disposed between the liquid crystal module  3  and the substrate  5 . The liquid crystal module  3  and the chassis  4  are arranged to face each other. The chassis  4  and the substrate  5  are arranged to face each other. The display surface of the liquid crystal module  3  is exposed to the outside of the electronic apparatus  100  through the opening of front panel  1 . 
     The liquid crystal module  3  and the substrate  5  are electrically connected by a flat cable  6 . Further, the liquid crystal module  3  and the substrate  5  are electrically connected by a cable  7 . Each of the flat cable  6  and the cable  7  is wired so as to avoid the chassis  4  inside the electronic apparatus  100 . The front panel  1 , the rear cover  2 , the liquid crystal module  3 , the chassis  4 , the substrate  5 , the flat cable  6 , and the cable  7  constitute a main part of the electronic apparatus  100 . 
     One end portion (hereinafter, referred to as a “first end portion”) of the cable  7  is electrically connected to the substrate  5 . More specifically, a connector  11  is provided at the first end portion of the cable  7 , a terminal  12  is provided on the substrate  5 , and the connector  11  is connected to the terminal  12 . Here, a connection portion (not illustrated) between the connector  11  and the terminal  12  has a cylindrical shape. Thus, the connector  11  is rotatable with respect to the terminal  12  in a state of being connected to the terminal  12 . 
     The other end portion (hereinafter, referred to as a “second end portion”.) of the cable  7  is electrically connected to the liquid crystal module  3 . For this reason, while the substantially half portion (hereinafter, referred to as a “first half portion”) including the first end portion of the cable  7  is disposed in a space portion (hereinafter, referred to as a “first space portion”) S 1  between the chassis  4  and the substrate  5 , the substantially half portion (hereinafter, referred to as a “second half portion”) including the second end portion of the cable  7  is disposed in a space portion (hereinafter, referred to as a “second space portion”) S 2  between the liquid crystal module  3  and the chassis  4 . As described above, at least a part of the cable  7  is disposed between the chassis  4  and the substrate  5 . 
     The cable  7  is pulled out from the second space portion S 2  to the first space portion S 1  through a notch-shaped recess formed on the chassis  4  ( 13  in the drawing). Hereinafter, a portion from which the cable  7  is pulled out is referred to as a “pull-out portion”. 
     Hereinafter, among the directions along the plate surface of the chassis  4 , a direction along a virtual straight line passing through the arrangement position of the terminal  12  and the arrangement position of the pull-out portion  13  is referred to as a “second direction” or a “Y direction”. In the drawing, the Y axis indicates a virtual axis along the Y direction. Among the directions along the plate surface of the chassis  4 , a direction orthogonal to the Y direction is referred to as a “first direction” or an “X direction”. In the drawing, the X axis indicates a virtual axis along the X direction. Further, a direction orthogonal to the plate surface of the chassis  4 , that is, a direction orthogonal to the X direction and the Y direction is referred to as a “Z direction”. In the drawing, the Z axis indicates a virtual axis along the Z direction. 
     In the example illustrated in  FIGS. 1 to 6 , the chassis  4  has a substantially rectangular shape. Therefore, the chassis  4  has two short side portions and two long side portions. Here, the terminal  12  and the pull-out portion  13  are arranged at positions corresponding to one of the two short side portions. Accordingly, the Y direction is set to a direction along each of the two short side portions. The X direction is set to a direction along each of the two long side portions. 
     The chassis  4  is made of sheet metal, for example. A plurality of dampers  21  is formed by cutting and raising the sheet metal and step bending. More specifically, a first damper  21 _ 1 , a second damper  21 _ 2 , and a third damper  21 _ 3  are formed. The first half portion of the cable  7  is clamped by the individual clampers  21 . 
     As illustrated in  FIG. 3 , the arrangement position of the terminal  12  with respect to the X direction is set at a position equivalent to the arrangement position of the pull-out portion  13  with respect to the X direction. The arrangement position of the second clamper  21 _ 2  with respect to the X direction is set at a position equivalent to the arrangement position of the third damper  21 _ 3  with respect to the X direction. The arrangement positions of the second damper  21 _ 2  and the third clamper  21 _ 3  with respect to the X direction are set to positions different from the arrangement positions of the terminal  12  and the pull-out portion  13  with respect to the X direction. The arrangement position of the first clamper  21 _ 1  with respect to the X direction is set at a position between the arrangement positions of the terminal  12  and the pull-out portion  13  with respect to the X direction and the arrangement positions of the second damper  21 _ 2  and the third damper  21 _ 3  with respect to the X direction. 
     Hereinafter, in the X direction, a direction from the arrangement positions of the terminal  12  and the pull-out portion  13  toward the arrangement positions of the second damper  21 _ 2  and the third damper  21 _ 3  is referred to as a “positive direction”. Further, in the X direction, a direction from the arrangement positions of the second damper  21 _ 2  and the third damper  21 _ 3  to the arrangement positions of the terminal  12  and the pull-out portion  13  is referred to as a “negative direction”. 
     As illustrated in  FIG. 3 , the arrangement position of the terminal  12  with respect to the Y direction is set at a position different from the arrangement position of the pull-out portion  13  with respect to the Y direction. The arrangement position of the third clamper  21 _ 3  with respect to the Y direction is set at a position equivalent to the arrangement position of the terminal  12  with respect to the Y direction. The arrangement position of the second damper  21 _ 2  with respect to the Y direction is set at a position equivalent to the arrangement position of the first clamper  21 _ 1  with respect to the Y direction. The arrangement positions of the first damper  21 _ 1  and the second damper  21 _ 2  with respect to the Y direction are set at positions between the arrangement positions of the terminal  12  and the third clamper  21 _ 3  with respect to the Y direction and the arrangement position of the pull-out portion  13  with respect to the Y direction. 
     Hereinafter, in the Y direction, a direction from the arrangement position of the terminal  12  toward the arrangement position of the pull-out portion  13 , that is, a direction from the arrangement position of the third damper  21 _ 3  toward the arrangement position of the second damper  21 _ 2  is referred to as a “positive direction”. Further, in the Y direction, a direction from the arrangement position of the pull-out portion  13  toward the arrangement position of the terminal  12 , that is, a direction from the arrangement position of the second damper  21 _ 2  toward the arrangement position of the third damper  21 _ 3  is referred to as a “negative direction”. 
     The opening direction of the first damper  21 _ 1  is set to the negative direction with respect to the X direction and to the negative direction with respect to the Y direction. More specifically, the opening direction of the first damper  21 _ 1  is set to a direction inclined by 45 degrees with respect to each of the X direction and the Y direction. The opening direction of the second damper  21 _ 2  is set to the positive direction with respect to the Y direction. The opening direction of the third clamper  21 _ 3  is set to the positive direction with respect to the X direction and to the negative direction with respect to the Y direction. 
     That is, the opening direction (positive direction) of the second damper  21 _ 2  with respect to the Y direction is set to a direction opposite to the opening direction (negative direction) of the first damper  21 _ 1  with respect to the Y direction, and is set to a direction opposite to the opening direction (negative direction) of the third clamper  21 _ 3  with respect to the Y direction. In other words, the opening directions of the plurality of dampers  21 _ 1 ,  21 _ 2 , and  21 _ 3  with respect to the Y direction are set to alternately reverse directions (negative direction→positive direction→negative direction). 
     Hereinafter, a length L of a portion of the cable  7  disposed in the first space portion S 1 , that is, the length L of the first half portion of the cable  7  is referred to as a “wiring length”. Each of C 1  and C 2  in  FIG. 3  indicates a virtual circle passing through the arrangement position of the terminal  12  and the arrangement position of the second damper  21 _ 2  and having a circumferential length corresponding to the wiring length L (more specifically, a circumferential length equivalent to the wiring length L). The first damper  21 _ 1  is disposed inside one circle C 1  out of the two circles C 1  and C 2 . On the other hand, the third clamper  21 _ 3  is disposed inside the other circle C 2  of the two circles C 1  and C 2 . 
     A height H 3  (see  FIG. 4 ) of a cut-and-raised portion (hereinafter, referred to as a “cut-and-raised portion”) in the third damper  21 _ 3  is set to a value larger than those of a height H 1  (not shown) of a cut-and-raised portion in the first clamper  21 _ 1  and a height H 2  (see  FIGS. 5 and 6 ) of a cut-and-raised portion in the second damper  21 _ 2 . In other words, the height H 1  of the cut-and-raised portion in the first damper  21 _ 1  and the height H 2  of the cut-and-raised portion in the second damper  21 _ 2  are set to values smaller than that of the height H 3  of the cut-and-raised portion in the third clamper  21 _ 3 . Therefore, the first half portion of the cable  7  is fixedly clamped by each of the first damper  21 _ 1  and the second clamper  21 _ 2 , and is movably clamped by the third damper  21 _ 3 . 
     As described above, the chassis  4  is made of sheet metal, for example. A protrusion  22  having a drawing shape is formed by drawing or the like on the sheet metal. The protrusion  22  is disposed between the first damper  21 _ 1  and the second damper  21 _ 2 . The height H 4  of the protrusion  22  is set to a value larger than that of the height H 2  of the cut-and-raised portion in the second damper  21 _ 2  (see  FIGS. 5 and 6 ). In addition, the height H 4  of the protrusion  22  is set to a value larger than that of the height H 1  of the cut-and-raised portion in the first damper  21 _ 1 . A portion of the cable  7  between a portion clamped by the first damper  21 _ 1  and a portion clamped by the second clamper  21 _ 2  is in contact with the protrusion  22  (see  FIGS. 5 and 6 ). 
     Next, with reference to  FIG. 7 , a method of assembling the electronic apparatus  100  will be described focusing on the connection work and extra length processing. Furthermore, effects of the structure of the electronic apparatus  100  will be described. 
     First, in a state where the first half portion of the cable  7  is pulled out from the second space portion S 2  to the first space portion S 1  through the pull-out portion  13 , the worker performs work (hereinafter, referred to as “wiring work”) of sequentially hooking the first half portion of the cable  7  to the first damper  21 _ 1 , the second damper  21 _ 2 , and the third clamper  21 _ 3 . As a result, as illustrated in  FIG. 7A , the first half portion of the cable  7  is clamped by each of the first clamper  21 _ 1 , the second damper  21 _ 2 , and the third damper  21 _ 3 . In addition, the connector  11  is guided to a position near the arrangement position of the terminal  12 . 
     Here, as described above, the opening directions of the plurality of dampers  21 _ 1 ,  21 _ 2 , and  21 _ 3  with respect to the Y direction are set to alternately reverse directions (negative direction→positive direction→negative direction). As a result, when the worker performs the wiring work, the movement of the hand of the worker can be made smooth. That is, the moving line of the hand of the worker can be a wavy smooth line. As a result, workability of wiring work can be improved. 
     Next, as illustrated in  FIG. 7B , the worker performs work of guiding the connector  11  to the arrangement position of the terminal  12  and work of connecting the connector  11  to the terminal  12 . That is, the worker performs the connection work. D 1  in  FIG. 7B  illustrates an example of the moving direction of the connector  11  in the connection work. At this time, the worker can easily guide the connector  11  to the arrangement position of the terminal  12  with the extra length of the cable  7 . That is, the connection work can be facilitated. 
     However, when the connection work is performed, a part of the cable  7  protrudes to the region outside the chassis  4  due to the extra length of the cable  7  (see  FIG. 7B ). Then, as illustrated in  FIG. 7C , the worker then performs a work of pushing the protruding portion into the region in the chassis  4 . That is, the worker performs extra length processing.  FIG. 7D  illustrates an example of a state after the extra length processing is performed. As illustrated in  FIG. 7D , the shape of the first half portion of the cable  7  after the extra length processing is performed is substantially U-shaped. 
     Here, D 2  in  FIG. 7C  illustrates an example of a direction in which the cable  7  is pushed. D 3  and D 4  in  FIG. 7C  illustrate examples of the moving direction of the cable  7  when the cable  7  is pushed. R 1  and R 2  in  FIG. 7C  indicate examples of the deformation range of the cable  7  when the cable  7  is pushed. D 5  in  FIG. 7C  indicates a rotation direction of the connector  11  when the cable  7  is pushed. 
     That is, as described above, the connection portion between the connector  11  and the terminal  12  is configured to be rotatable. As a result, as illustrated in  FIG. 7C , when the cable  7  is pushed in by the extra length processing, the connector  11  rotates with respect to the terminal  12  (see D 5  in  FIG. 7C ). As a result, a mechanical load applied to the first end portion of the connector  11  can be reduced as compared with a case where the connection portion between the connector  11  and the terminal  12  is configured to be non-rotatable. 
     Next, another effect of the structure of the electronic apparatus  100  will be described with reference to  FIGS. 3 to 8 . 
     Firstly, as shown in  FIG. 3 , the arrangement position of the second damper  21 _ 2  with respect to the X direction is set at a position different from the arrangement position of the terminal  12  with respect to the X direction, and is set at a position equivalent to the arrangement position of the third damper  21 _ 3  with respect to the X direction. The opening direction of the second damper  21 _ 2  with respect to the Y direction is set to the positive direction. The opening direction of the third damper  21 _ 3  with respect to the Y direction is set to the negative direction. Therefore, as illustrated in  FIG. 7A , the connector  11  is guided to a position near the arrangement position of the terminal  12  by the wiring work performed by the worker. That is, the connector  11  is guided to a position suitable for connection work. Accordingly, handling of the cable  7  in the connection work can be facilitated. 
     Secondly, as shown in  FIG. 3 , the third damper  21 _ 3  is disposed inside the virtual circle C 2 . As illustrated in  FIG. 7C , when the extra length processing is performed, the cable  7  rotates about the connector  11  (see D 5  in the drawing), and the cable  7  moves in the direction orthogonal to the longitudinal direction of the third damper  21 _ 3  (see D 3  in the drawing). Here, since the cable  7  is fixed at the second damper  21 _ 2  after the movement, a force in the negative direction in the Y direction is generated in the cable  7  at the third damper  21 _ 3 . This makes it possible to suppress the occurrence of return of the cable  7 . As a result, it is possible to avoid the shape of the first half portion of the cable  7  from returning from the shape illustrated in  FIG. 7D  to the shape illustrated in  FIG. 7C . 
     Thirdly, as shown in  FIG. 3 , the arrangement position of the first damper  21 _ 1  with respect to the X direction is set at a position between the arrangement position of the terminal  12  with respect to the X direction and the arrangement position of the second damper  21 _ 2  with respect to the X direction. The opening direction of the first damper  21 _ 1  with respect to the Y direction is set to be opposite to the opening direction of the second damper  21 _ 2  with respect to the Y direction. Since the first damper  21 _ 1  is provided in addition to the second damper  21 _ 2 , the orientation of the cable  7  between the pull-out portion  13  and the second damper  21 _ 2  can be stabilized. 
     In addition, since the third clamper  21 _ 3  is provided in addition to the first damper  21 _ 1  and the second clamper  21 _ 2 , as illustrated in  FIG. 7C , the movable direction of the cable  7  in the extra length processing can be limited to a predetermined direction (see D 2 , D 3 , and D 4  in the drawing). Further, the movable range of the cable  7  in the extra length processing can be limited to a predetermined range (see R 1  and R 2  in the drawing). 
     Fourthly, the opening direction of the first damper  21 _ 1  with respect to the X direction is set to the negative direction, and the opening direction of the second damper  21 _ 2  with respect to the Y direction is set to the negative direction. That is, the opening direction of the first damper  21 _ 1  is set to a direction inclined with respect to each of the X direction and the Y direction. As a result, it is possible to improve the workability of the work in which the worker hooks the cable  7  on the first clamper  21 _ 1  and the work in which the worker hooks the cable  7  on the second damper  21 _ 2 . As a result, the mechanical load applied to the cable  7  by these works can be reduced. In addition, the behavior of the cable  7  when the cable  7  is clamped by the second damper  21 _ 2  can be stabilized. 
     Fifth, the chassis  4  is provided with the protrusion  22  having a drawing shape. As shown in  FIG. 3 , the protrusion  22  is disposed between the first damper  21 _ 1  and the second clamper  21 _ 2 . Therefore, in addition to the cable  7  being held due to clamping by the first damper  21 _ 1  and the second damper  21 _ 2 , the cable  7  is held by the contact with the protrusion  22 . This makes it possible to stabilize the behavior of the cable  7  when the cable  7  is clamped by the second damper  21 _ 2  in the wiring work. In addition, when the cable  7  is pushed in by the extra length processing, the cable  7  can be hardly detached from the second damper  21 _ 2 . 
     Sixth, as shown in  FIGS. 5 and 6 , the height H 4  of the protrusion  22  is set to a value larger than that of the height H 2  of the second clamper  21 _ 2 . As a result, for example, in a case where the liquid crystal module  3  and the substrate  5  are electrically connected by a plurality of cables including the cable  7  and the other cable  8 , and the plurality of cables is clamped by the plurality of dampers  21 , when the plurality of cables is arranged side by side in the Z direction between the first damper  21 _ 1  and the second damper  21 _ 2  (see  FIG. 8 ), the plurality of cables can be brought into contact with the protrusion  22 . As a result, the plurality of cables can be held. 
     Seventh, the height H 3  (see  FIG. 4 ) of the third damper  21 _ 3  is set to a value larger than those of the height H 1  (not shown) of the first damper  21 _ 1  and the height H 2  (see  FIGS. 5 and 6 ) of the second damper  21 _ 2 . Therefore, as described above, the cable  7  is fixedly clamped by the first damper  21 _ 1  and the second damper  21 _ 2 , and is movably clamped by the third damper  21 _ 3 . 
     As a result, a plurality of functions can be implemented using the plurality of dampers  21 . That is, the first clamper  21 _ 1  and the second damper  21 _ 2  mainly function to fix the cable  7  to the chassis  4 . On the other hand, the third damper  21 _ 3  mainly functions to guide the connector  11  to a position suitable for the connection work (that is, a position near the terminal  12 ) at the time of the wiring work, and functions to limit the movable direction and the movable range of the cable  7  in the extra length processing. 
     Next, a modification of the electronic apparatus  100  will be described. 
     The number of dampers  21 , the arrangement positions of the individual dampers  21 , the opening directions of the individual dampers  21 , and the heights of the individual dampers  21  are not limited to the examples illustrated in  FIGS. 3 to 6  and the like. In addition, the arrangement position of the protrusion  22 , the height H 4  of the protrusion  22 , and the presence or absence of the protrusion  22  are not limited to the examples illustrated in  FIGS. 3 to 6  and the like. In addition, the arrangement position of the terminal  12  and the arrangement position of the pull-out portion  13  are not limited to the examples illustrated in  FIGS. 3 to 6  and the like. 
     These parameters may be set so as to implement at least a function of fixing the cable  7  to the chassis  4 , a function of limiting the movable direction of the cable  7  in the extra length processing to a predetermined direction, and a function of limiting the movable range of the cable  7  in the extra length processing to a predetermined range. More preferably, these parameters may be set so as to implement, in addition to these functions, a function of suppressing the return of the cable  7  after the extra length processing and a function of guiding the connector  11  to a position suitable for the connection work (that is, a position near the arrangement position of the terminal  12 ) by the wiring work. 
     That is, specific aspects of these parameters for implementing these functions can vary depending on the application, specification, and the like of the electronic apparatus  100 . Therefore, these parameters only need to be set by those skilled in the art so that these functions are implemented in accordance with the application, specification, and the like of the electronic apparatus  100 . 
     For example, the plurality of dampers  21  may include a fourth damper  21 _ 4  (not illustrated) in addition to the first damper  21 _ 1 , the second damper  21 _ 2 , and the third clamper  21 _ 3 . The fourth damper  21 _ 4  is formed on the chassis  4  instead of the protrusion  22 . The fourth damper  21 _ 4  fixedly holds the cable  7 . 
     Further, for example, the second damper  21 _ 2  may include two or more dampers. That is, the plurality of dampers  21  may include four or more dampers, and the cable  7  may be fixed by three or more dampers among the four or more dampers. 
     Further, for example, the terminal  12  and the pull-out portion  13  may be arranged at a center portion of the chassis  4  instead of being arranged at an edge portion of the chassis  4  (more specifically, one short side portion of two short side portions). 
     In addition, the connection portion between the connector  11  and the terminal  12  may be configured to be non-rotatable. However, as described above, from the viewpoint of reducing the mechanical load applied to the first end portion of the cable  7 , the connection portion between the connector  11  and the terminal  12  is more preferably configured to be rotatable. 
     In addition, the application of the electronic apparatus  100  is not limited to the display device for the in-vehicle information device. The electronic apparatus  100  may be used for any electronic apparatus as long as it is an electronic apparatus including at least the chassis  4 , the substrate  5 , and the cable  7 . 
     As described above, the electronic apparatus  100  according to the first embodiment includes the chassis  4  and the substrate  5  arranged to face each other, the cable  7  disposed between the chassis  4  and the substrate  5  and having an extra length, and the plurality of dampers  21  formed on the chassis  4  and clamping the cable  7 . The plurality of dampers  21  includes the second damper  21 _ 2  fixedly clamping the cable  7  and the third damper  21 _ 3  movably clamping the cable  7 . The cable  7  is fixed to the chassis  4  by the second damper  21 _ 2 , and the movable direction and the movable range of the cable  7  in the extra length processing of the cable  7  are limited by the third damper  21 _ 3 . As a result, the electronic apparatus  100  having a structure for extra length processing can be achieved. In addition, an additional member such as a hook-and-loop fastener can be made unnecessary in fixing the cable  7  to the chassis  4 . As a result, it is possible to avoid an increase in the number of components of the electronic apparatus  100  due to such an additional member. 
     In addition, the plurality of dampers  21  suppresses the return of the cable  7  after the extra length processing. As a result, for example, it is possible to avoid the shape of the cable  7  from returning from the shape illustrated in  FIG. 7D  to the shape illustrated in  FIG. 7C  after the extra length processing is performed. In other words, after the extra length processing is performed, the shape of the first half portion of the cable  7  can be maintained in a substantially U shape. 
     Further, the electronic apparatus  100  includes the connector  11  provided at the first end portion of the cable  7  and the terminal  12  provided on the substrate  5  and connected with the connector  11 . The arrangement position of the second damper  21 _ 2  with respect to the first direction (X direction) of the first direction (X direction) and the second direction (Y direction) orthogonal to each other among the directions along the plate surface of the chassis  4  is set at a position different from the arrangement position of the terminal  12  with respect to the first direction (X direction), and is set at a position equivalent to the arrangement position of the third damper  21 _ 3  with respect to the first direction (X direction). The opening direction of the second damper  21 _ 2  with respect to the second direction (Y direction) is set to the positive direction, and the opening direction of the third damper  21 _ 3  with respect to the second direction (Y direction) is set to the negative direction. As a result, when the worker performs the wiring work, the connector  11  is guided to a position near the arrangement position of the terminal  12 . That is, the connector  11  is guided to a position suitable for connection work. As a result, handling of the cable  7  in the connection work can be facilitated. 
     In addition, the third damper  21 _ 3  is disposed inside the predetermined circle C 2 , and the predetermined circle C 2  is a circle C 2  that passes through a position corresponding to the arrangement position of the second damper  21 _ 2 , passes through a position corresponding to the arrangement position of the terminal  12 , and has a circumferential length corresponding to the wiring length L of the cable  7 . This makes it possible to suppress the occurrence of return of the cable  7 . 
     The plurality of dampers  21  includes the first clamper  21 _ 1  that fixedly clamps the cable  7 , and the cable  7  is fixed to the chassis  4  by the first damper  21 _ 1  and the second damper  21 _ 2 . The arrangement position of the first damper  21 _ 1  with respect to the first direction (X direction) is set at a position between the arrangement position of the terminal  12  with respect to the first direction (X direction), and the arrangement position of the second damper  21 _ 2  with respect to the first direction (X direction). The opening direction of the first damper  21 _ 1  with respect to the second direction (Y direction) is set to a direction opposite to the opening direction of the second damper with respect to the second direction (Y direction). This makes it possible to stabilize the orientation of the cable  7  between the pull-out portion  13  and the second clamper  21 _ 2 . In addition, the movable direction of the cable  7  in the extra length processing can be limited to a predetermined direction, and the movable range of the cable  7  in the extra length processing can be limited to a predetermined range. 
     Further, the opening direction of the first damper  21 _ 1  with respect to the first direction (X direction) is set to the negative direction, and the opening direction of the first damper  21 _ 1  with respect to the second direction (Y direction) is set to the negative direction. As a result, it is possible to improve the workability of the work in which the worker hooks the cable  7  on the first damper  21 _ 1  and the work in which the worker hooks the cable  7  on the second damper  21 _ 2 . As a result, the mechanical load applied to the cable  7  by these works can be reduced. In addition, the behavior of the cable  7  when the cable  7  is clamped by the second clamper  21 _ 2  can be stabilized. 
     In addition, the electronic apparatus  100  includes the protrusion  22  provided on the chassis  4  and having a drawing shape, and the protrusion  22  is disposed between the first damper  21 _ 1  and the second clamper  21 _ 2 . This makes it possible to stabilize the behavior of the cable  7  when the cable  7  is clamped by the second damper  21 _ 2  in the wiring work. In addition, when the cable  7  is pushed in by the extra length processing, the cable  7  can be hardly detached from the second damper  21 _ 2 . 
     The height H 4  of the protrusion  22  is set to a value larger than that of the height H 2  of the second damper  21 _ 2 . As a result, when a plurality of cables including the cable  7  and the other cable  8  is arranged side by side in the Z direction between the first damper  21 _ 1  and the second damper  21 _ 2 , the plurality of cables can be held. 
     The height H 3  of the third damper  21 _ 3  is set to a value larger than that of the height H 2  of the second damper  21 _ 2 . As a result, the second damper  21 _ 2  that fixedly clamps the cable  7  can be achieved, and the third damper  21 _ 3  that movably clamps the cable  7  can be achieved. The third damper  21 _ 3  can implement a function of limiting the movable direction and the movable range of the cable  7  in the extra length processing. 
     In addition, the connection portion between the connector  11  and the terminal  12  is configured to be rotatable. When the cable  7  is pushed in by the extra length processing, the connector  11  rotates with respect to the terminal  12 , so that a mechanical load applied to the first end portion of the cable  7  can be reduced. 
     It should be noted that the invention of the present application is capable of modifying any of the constituent elements of the embodiment or omitting any of the constituent elements of the embodiment within the scope of the invention. 
     INDUSTRIAL APPLICABILITY 
     The electronic apparatus of the present invention can be used for, for example, a display device for an in-vehicle information device. 
     REFERENCE SIGNS LIST 
       1 : front panel,  2 : rear cover,  3 : liquid crystal module,  4 : chassis,  5 : substrate,  6 : flat cable,  7 : cable,  8 : cable,  11 : connector,  12 : terminal,  13 : pull-out portion,  21 : damper,  21 _ 1 : first damper,  21 _ 2 : second damper,  21 _ 3 : third damper,  22 : protrusion,  100 : electronic apparatus