Device for opening and closing the charging door

Abstract

The present invention relates to a device configured for opening and closing a charging door, which may include: a guide rail installed in a charging hole along a longitudinal direction of the charging hole; an actuator configured to provide a driving force; and a charging door coupled to the actuator and configured to be hidden and moved in the charging hole along the guide rail according to the driving force received from the actuator when the charging hole is closed, so as to open the charging hole.

Description

Technical Field

[0001] The present invention relates to a device for opening and closing a charging door, which is capable of improving the opening structure of the charging door to prevent damage to a charging part and improve the marketability of the structure of the charging door. Background Art

[0002] In order to charge the electric vehicle, a charging port is installed in the charging hole, and a charging door is configured to be openable and closable in the charging hole to protect the charging port.

[0003] In existing charging doors, since the charging door is connected around the charging port with a single-axis hinge structure, when charging is required, the charging door pivots outward based on the hinge, thereby opening the charging port. This does not significantly differ between the manual and automatic opening methods of the charging door.

[0004] However, in this opening structure of the charging door, when the charging door is opened, since the charging door protrudes outside the charging hole, there is a problem that when the charging gun enters the charging door, it interferes with the charging door and may scratch or damage the charging door.

[0005] In particular, in the future era of autonomous vehicles, it is expected that charging systems will automatically charge batteries based on customer needs. In such charging systems, when the charging gun automatically enters the charging port and the charging door automatically opens, there is a risk that the charging door and the charging gun will collide with each other, causing damage to the charging components.

[0006] The information disclosed in this background technology section is only intended to deepen the understanding of the general background technology of the present invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the Invention

[0007] Various aspects of the present invention are directed to providing a device configured for opening and closing a charging door, the device being configured for improving an opening structure of the charging door to prevent damage to a charging portion and improving the marketability of the charging door structure.

[0008] According to one aspect, a device for opening or closing a charging door is provided, which may include: a guide rail housing installed on the inner side of a charging hole; an actuator configured to provide a driving force; and a charging door coupled to the actuator and configured to be able to selectively move on the charging hole through a portion of the charging hole according to the driving force received from the actuator.

[0009] Furthermore, a device configured for opening and closing a charging door is provided, which may include: a guide rail installed in the charging hole along a longitudinal direction of the charging hole; an actuator configured to provide a driving force; and a charging door coupled to the actuator and configured to be hidden and moved in the charging hole along the guide rail according to the driving force received from the actuator when the charging hole is closed, so as to open the charging hole.

[0010] The guide rail may include: a pivot guide portion, which is formed in an arc shape from the charging hole to the charging port and is configured to cause the charging door to pivot and move along the pivot guide portion; and a linear guide portion, which is formed to extend linearly from the far end of the pivot guide portion and is configured to cause the charging door to move linearly along the linear guide portion.

[0011] A guide roller may be provided, which is coupled to the charging door, slidably engaged to the guide rail, and configured to move along the guide rail, and the driving force of the actuator may be provided to one end of the guide roller, and the charging door may be coupled to the other end of the guide roller and move together with the guide roller.

[0012] A rack may be coupled to one end of the guide roller, the rack may be disposed in the same direction as the linear guide, a pinion may be engaged with the rack, and an actuator may be coupled to the pinion such that the rack may move according to rotational drive of the pinion.

[0013] The axial length of the pinion gear meshing with the rack can be formed to be greater than the widthwise length of the rack, so that the rack can move in the widthwise direction while moving in the longitudinal direction during movement of the rack along the path of the pivot guide.

[0014] The guide rail shell can be installed on both sides of the interior of the charging hole, and multiple guide rails with the same guide path can be formed on the front surface and rear surface of each guide rail shell, and the guide rollers arranged on the front guide rail and the rear guide rail can be connected to the upper end and the lower end of the charging door.

[0015] A charging information portion may be provided on the edge of the charging door.

[0016] The methods and apparatus of the present invention have other features and advantages that will be apparent from, or will be described in detail in, the accompanying drawings and subsequent embodiments incorporated herein, which together serve to explain the specific principles of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a diagram illustrating a state before a charging door is coupled to a charging hole according to an exemplary embodiment of the present invention;

[0018] Figure 2 is a conceptual diagram illustrating an operation of opening a charging door into a charging hole according to an exemplary embodiment of the present invention;

[0019] Figure 3 is a diagram illustrating a shape of a charging door at a closed position according to an exemplary embodiment of the present invention;

[0020] Figure 4 is a diagram illustrating a shape of a charging door at an open position according to an exemplary embodiment of the present invention;

[0021] Figure 5 is a diagram illustrating a coupling structure of a charging door, a guide roller, and a rack, and a guide structure based on a guide rail according to an exemplary embodiment of the present invention;

[0022] Figure 6 is a diagram illustrating a structure of a guide roller according to various exemplary embodiments of the present invention;

[0023] Figure 7 is a diagram showing a meshing structure of a rack and a pinion according to an embodiment of the present invention;

[0024] Figure 8 is a diagram for describing an operation of a charging door moving along a guide path of a guide roller and opening according to an exemplary embodiment of the present invention.

[0025] It should be understood that the accompanying drawings are not necessarily drawn to scale, but rather present simplified representations of various features to illustrate the basic principles of the invention. The specific design features disclosed in the present invention (including, for example, specific dimensions, directions, locations, and shapes) will be determined in part by the specific intended application and use environment.

[0026] In the figures, reference numbers refer to the same or equivalent parts of the present invention throughout the several figures of the drawing. DETAILED DESCRIPTION

[0027] Reference will now be made in detail to various embodiments of the present invention, examples of which are illustrated in the accompanying drawings and described below. Although the present invention will be described in conjunction with exemplary embodiments of the present invention, it should be understood that this specification is not intended to limit the present invention to those exemplary embodiments. On the other hand, the present invention is intended to cover not only the exemplary embodiments of the present invention, but also various alternative forms, modifications, equivalent forms and other embodiments that may be included within the spirit and scope of the present invention as defined by the appended claims.

[0028] Various exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Figure 1 is a diagram illustrating a state before the charging door 300 is coupled to the charging hole 100 according to an exemplary embodiment of the present invention, Figure 2 is a conceptual diagram illustrating an operation in which the charging door 300 opens into the charging hole 100 according to an exemplary embodiment of the present invention, Figure 3 is a diagram illustrating a shape of the charging door 300 at a closed position according to an exemplary embodiment of the present invention.

[0030] according to Figure 1 、 Figure 2 and Figure 3 The present invention includes a guide rail 210, an actuator 250 and a charging door 300. The guide rail 210 is installed in the charging hole 100 in a long longitudinal direction; the actuator 250 is used to provide a driving force; the charging door 300 is used to hide and move in the charging hole 100 along the guide rail 210 according to the driving force received from the actuator 250 when the charging hole 100 is closed, so as to open the charging hole 100.

[0031] Described in detail with reference to the drawings, a hole-shaped charging hole 100 is formed on the outer side of a vehicle body, and a charging port to which a charging gun (charging connector) is connected is provided in the charging hole 100 .

[0032] In addition, the charging door 300 may be formed in a shape corresponding to the shape of the charging hole 100 to close the charging hole 100 .

[0033] Since the guide rail 210 is installed in the charging hole 100 along its vertical length direction, the charging door 300 is vertically guided and moved along the guide rail 210 in the charging hole 100 , and thus the charging door 300 moves upward in the charging hole 100 to open the charging hole 100 .

[0034] Here, the actuator 250 for moving the charging door 300 may be a motor. The driving force of the motor may be transmitted to the charging door 300 through a power transmission member (to be described below) to vertically move the charging door 300.

[0035] For reference, the present invention can be preferably applied to an electric vehicle using electric energy as a driving source, but can also be applied to a fuel filler port of an engine vehicle using petroleum energy as a fuel.

[0036] That is, according to the above configuration, when actuator 250 operates to open charging door 300, the driving force received from actuator 250 is provided to charging door 300. Accordingly, charging door 300 moves along guide rail 210 and in a direction in which charging door 300 is inserted into charging port 100, and then moves above charging port 100.

[0037] As described above, since the charging door 300 is hidden in the charging hole 100 and moves to open the charging hole 100, when the charging gun enters the charging hole 100, interference caused by the charging door 300 is prevented, and the entry space for the charging gun is fully ensured to prevent damage to the charging components. At the same time, the opening structure of the charging door 300 is upgraded to improve the marketability of the vehicle.

[0038] Figure 3 is a diagram illustrating a shape of a charging door 300 at a closed position according to an exemplary embodiment of the present invention, Figure 4 is a diagram illustrating a shape of the charging door 300 at an open position according to an exemplary embodiment of the present invention.

[0039] Referring to the accompanying drawings, the guide rail 210 includes a pivot guide portion 210a and a linear guide portion 210b, the pivot guide portion 210a is formed in an arc shape from the charging hole 100 to the charging port, and is configured to pivotally move the charging door 300; the linear guide portion 210b is formed to extend linearly from the end of the pivot guide portion 210a, and is configured to linearly move the charging door 300.

[0040] That is, one end portion of the guide rail 210 is located adjacent to the charging port 100 , and the pivot guide portion 210 a is formed to rise in an arc shape from the one end portion of the guide rail 210 to a transition end portion of the guide rail 210 .

[0041] In addition, the linear guide portion 210 b is formed to rise in a linear shape from a transition end portion of the guide rail 210 toward the other end portion of the guide rail 210 .

[0042] Therefore, the charging door 300 is guided and moved in the charging hole 100 while rotating along the pivot guide portion 210a at the initial opening of the charging door 300, and then the charging door 300 moves linearly upward along the linear guide portion 210b connected to the pivot guide portion 210a, so that the charging hole 100 can be opened.

[0043] For reference, in the exemplary embodiment of the present invention, guide rail 210 is shown as being formed longitudinally along the upper portion of charging port 100 to thereby move charging door 300 upward. However, this is merely an exemplary embodiment. Considering the interior packaging or design features of the vehicle, guide rail 210 may be configured to be installed toward the lower portion of charging port 100 or toward both sides thereof to move charging door 300 thereto.

[0044] Figure 5 2 is a diagram illustrating a charging door 300 , a coupling structure of a guide roller 220 and a rack 230 , and a guide structure based on a guide rail 210 according to an exemplary embodiment of the present invention.

[0045] Referring to the accompanying drawings, a structure is provided, which is configured to be provided with a guide roller 220 that moves along a guide rail 210, the driving force of the actuator 250 is provided to one end of the guide roller 220, and the charging door 300 is connected to the other end of the guide roller 220, so that the charging door 300 moves together with the guide roller 220.

[0046] The grooved guide rail 210 is formed on an inner surface of a guide rail housing 200 (the guide rail housing 200 will be described below) and is inserted so that both ends of each of the guide rollers 220 are located on both inner wall surfaces of the guide rail 210 .

[0047] In addition, based on the gear meshing structure of the rack 230 and the pinion 240 (the pinion 240 will be described below), the driving force is received from the actuator 250 to one end of the guide roller 220, and the guide roller 220 is connected to the charging door 300 through the structure of the pin 232, so that the guide roller 220 can move while rotating relative to the charging door 300.

[0048] That is, when the guide roller 220 receives driving force from the actuator 250, the guide roller 220 is guided and moves along the guide rail 210. Even when the guide roller 220 rotates via the pivot guide 210a, the charging door 300 does not pivot due to the structure of the pin 232, but moves only along the path of the pivot guide 210a and the linear guide 210b along which the guide roller 220 moves.

[0049] Alternatively, the guide roller 220 may be provided with Figure 6 The structure of another exemplary embodiment is shown.

[0050] Referring to the drawings, a guide slit 212 may be formed at a central portion along a path of a guide rail 210 , and a guide roller 220 may be fitted to the guide slit 212 .

[0051] The structure of a roller such as a sliding roller applied to a sliding door may be applied to the guide roller 220 according to operation noise and opening and closing speeds of the charging door 300 , output of the actuator 250 , etc. Also, the guide roller 220 may be additionally installed.

[0052] Figure 7 2 is a diagram illustrating a meshing structure of the rack 230 and the pinion 240 according to an exemplary embodiment of the present invention.

[0053] refer to Figure 7 and Figure 5 , the rack 230 is connected to one end of the guide roller 220, the rack 230 is set in the same direction as the linear guide portion 210b, the pinion 240 is engaged with the rack 230, and the actuator 250 is connected to the pinion 240, so that the rack 230 moves according to the rotation drive of the pinion 240.

[0054] The rack 230 is provided on the outer surface of the guide rail housing 200, and the pin 232 provided to the rack 230 passes through the guide slit 212 to be hinged to the guide roller 220. The pin 232 may be hinged to the guide roller 220 to be coupled to the charging door 300.

[0055] In addition, the pinion 240 is arranged in a gear meshing structure on the outer surface of the guide rail housing 200 and is located on the upper portion of the rack 230, and the actuator 250 is connected to the shaft of the pinion 240, which is rotatably fixed to the support bracket 255, and the support bracket 255 is fixed to the guide rail housing 200 and spaced apart from each other.

[0056] That is, when the motor is driven, the rack 230 moves linearly as the pinion 240 rotates. Therefore, the guide roller 220 moves together with the rack 230 and moves along the guide rail 210 so that the charging door 300 can move in the charging hole 100.

[0057] However, when the guide roller 220 moves along the pivot guide portion 210 a , the rack 230 also moves along the pivot guide path, and therefore, the meshing structure between the rack 230 and the pinion 240 must be maintained during the movement of the rack 230 .

[0058] Therefore, if Figure 7 As shown, in an exemplary embodiment of the present invention, the axial length of the pinion 240 engaged with the rack 230 is formed to be greater than the length of the rack 230 in the width direction, so that when the rack 230 moves along the path of the pivot guide portion 210a, the rack 230 moves in the width direction and at the same time moves in the longitudinal direction.

[0059] That is, since the width of the pinion 240 is formed to be greater than the width of the rack 230, the rack 230 moves upward while being engaged with the pinion 240, and at the same time moves horizontally along the axial direction of the pinion 240, so that the rack 230 can move along the pivot guide portion 210a.

[0060] In addition, reference Figure 1 、 Figure 2 and Figure 3 In an exemplary embodiment of the present invention, the structure is configured so that the guide rail housing 200 is installed on both sides of the interior of the charging hole 100, and a plurality of guide rails 210 with the same guide path are formed on the front surface and the rear surface of each of the guide rail housings 200, and the guide rollers 220 provided on the front surface and the rear surface of each of the guide rails 210 are connected to the upper end and the lower end of the charging door 300.

[0061] The rail housing 200 of an enclosure shape protruding upward is coupled to the rear of the charging door 300 and is inserted and installed in the charging hole 100. Thus, the charging hole 100 is configured to be coupled to the charging door 300.

[0062] In addition, since both ends of the rail housing 200 are installed adjacent to both ends of the charging hole 100 , the guide rail 210 is formed at both ends of the rail housing 200 , and thus the structure is configured such that the guide roller 220 is coupled to the charging door 300 .

[0063] Since the guide rail 210 is formed in parallel on the front and rear surfaces of the guide rail housing 200, the guide roller 220 moving along the guide rail 210 on the front surface is connected to the upper end of the charging door 300, and the guide roller 220 moving along the guide rail 210 on the rear surface is connected to the lower end of the charging door 300.

[0064] Therefore, since the swing or rotation of the charging door 300 is restricted when the charging door 300 moves, the charging door 300 moves stably. Therefore, during the movement of the charging door 300, interference of the charging door 300 with the surrounding structure can be avoided.

[0065] In addition, in an exemplary embodiment of the present invention, a charging information portion 310 may be provided at the edge portion of the charging door 300. That is, a decorative light is provided at the edge portion of the charging door 300 to display charging information such as the charging progress status and the charging amount, thereby improving the marketability of the vehicle.

[0066] Reference below Figure 8 as well as Figure 3 and Figure 4 Describing the operation of opening the charging door 300 in an exemplary embodiment of the present invention, the motor may automatically operate to open or close the charging door 300 when charging of the vehicle is required, when the actuator operates the motor by performing an operation of a switch for opening or closing the charging door 300, or when the vehicle enters a charging station.

[0067] Therefore, when the motor is operated, the pinion gear 240 coupled to the motor is rotated, and thus the rack gear 230 engaged with the pinion gear 240 starts to move upward.

[0068] Accordingly, as the guide roller 220 coupled to the rack 230 begins to move along the pivot guide 210 a formed on the guide rail 210 , the charging door 300 coupled to the guide roller 220 also moves along the path of the pivot guide 210 a and toward the inside of the charging hole 100 .

[0069] In this case, the rack 230 moves in the axial direction of the pinion 240 and moves upward.

[0070] In addition, as the motor continues to operate, the guide roller 220 enters the linear guide 210b from the pivot guide 210a. Accordingly, when the guide roller 220 moves upward along the linear guide 210b, the charging door 300 also moves upward along the path of the linear guide 210b to open the charging hole 100.

[0071] As described above, in an exemplary embodiment of the present invention, since the charging door 300 is hidden in the charging hole 100 and moves to open the charging hole 100, when the charging gun enters the charging hole 100, interference due to the charging door 300 is prevented, and entry space for the charging gun is fully ensured to prevent damage to the charging components, while the opening structure of the charging door 300 is upgraded to improve the marketability of the vehicle.

[0072] In an exemplary embodiment of the present invention, a pair of brackets 245 are connected to the guide rail housing 200 , and the rack 230 is installed between the brackets 245 .

[0073] In an exemplary embodiment of the present invention, the controller is connected to at least one element of the device configured to open and close the charging door to control the operation thereof, such as, but not limited to, the actuator 250 .

[0074] In addition, the term "controller" refers to a hardware device including a memory and a processor, the processor being configured to execute one or more steps (which are understood as an algorithmic structure). The memory stores the algorithmic steps, and the processor executes the algorithmic steps to perform one or more processes of the method according to various exemplary embodiments of the present invention. The controller according to the exemplary embodiment of the present invention can be implemented by a non-volatile memory and a processor, the non-volatile memory being configured to store algorithms for controlling the operation of various components of the vehicle, or storing data about software commands for executing the algorithm; the processor being configured to perform the above operations using data stored in the memory. The memory and the processor can be separate chips. Alternatively, the memory and the processor can be integrated in a single chip. The processor can be implemented as one or more processors.

[0075] According to various aspects of the present invention, since the charging door is hidden in the charging hole and moves in the charging hole to open the charging hole, there is an effect when the charging gun enters the charging hole, that is, interference due to the charging door is prevented, and the entry space of the charging gun is fully ensured to prevent damage to the charging components, and the opening structure of the charging door is upgraded to improve the marketability of the vehicle.

[0076] For ease of explanation and precise definition in the appended claims, the terms "up," "down," "inside," "outside," "above," "below," "upward," "downward," "front," "back," "behind," "inside," "outside," "inwardly," "outwardly," "interior," "exterior," "inner," "exterior," "forward," and "rearward" are used to describe features of the exemplary embodiments with reference to the positions of such features as shown in the accompanying drawings. It will be further understood that the term "connect" or its derivatives refers to both direct and indirect connections.

[0077] The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. The foregoing descriptions are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and it is apparent that many variations and modifications are possible in light of the foregoing teachings. The exemplary embodiments have been chosen and described in order to explain the specific principles of the invention and their practical application, thereby enabling others skilled in the art to make and utilize the various exemplary embodiments of the invention and various alternative forms and modifications thereof. The scope of the invention is intended to be defined by the appended claims and their equivalents.

Claims

1. A device for opening or closing a charging door, the device comprising: A guide rail housing, which is installed inside the charging hole; an actuator configured to provide a driving force; as well as a charging door coupled to the actuator and configured to be selectively movable on the charging port through a portion of the charging port in accordance with a driving force received from the actuator; wherein the guide rail housing comprises a guide rail, wherein the guide rail is formed on a surface of the guide rail housing along the charging hole in a longitudinal direction of the guide rail housing, wherein the charging door is movable along the guide rail; Wherein, the guide rail includes: a pivot guide portion curved in an arc, wherein the charging door is configured to pivot and move along the pivot guide portion; and a linear guide portion formed to linearly extend from a distal end of the pivot guide portion, wherein the charging door is configured to move linearly along the linear guide portion; The apparatus further includes a guide roller coupled to the charging door, slidably engaged to the guide rail, and configured to move along the guide rail; wherein, The actuator is coupled to a first end portion of the guide roller, and a driving force of the actuator is provided to the first end portion of the guide roller; The charging door is coupled to the second end portion of the guide roller and moves along the guide rail with the guide roller; The device further comprises: a rack coupled to the first end portion of the guide roller; and a pinion gear connected to the actuator and meshing with the rack; wherein, The rack is aligned along a linear guide; The rack moves according to the rotation drive of the pinion; In which, the shaft of the pinion includes a plurality of teeth along the entire length of the shaft of the pinion, and the entire axial length of the pinion meshing with the rack is formed to be greater than the length of the rack in the width direction, so that when the rack moves along the path of the pivot guide portion, the rack moves in the width direction and in the longitudinal direction at the same time.

2. The device for opening or closing a charging door according to claim 1, wherein: The charging door is configured to be hidden and move in the charging hole along the guide rail according to a driving force received from the actuator in a state where the charging hole is closed, so as to open the charging hole.

3. The device for opening or closing a charging door according to claim 1, wherein: The pivot guide portion is formed in an arc shape from the charging hole to the charging port to form an arc line.

4. The device for opening or closing a charging door according to claim 1, further comprising a pair of brackets connected to the guide rail housing, wherein The rack meshes with a pinion located between the brackets, enabling the rack to move between the brackets.

5. The device for opening or closing a charging door according to claim 1, further comprising: a pin connected to the charging door, wherein a distal end of the pin is slidably coupled to a portion of the guide rail housing; the rack coupled to one end of the pin; and the pinion gear connected to the actuator and meshing with the rack; a pair of brackets connected to the guide rail housing, The rack is engaged with a pinion located between the brackets, so that the rack can move between the brackets.

6. The device for opening or closing a charging door according to claim 5, wherein: The guide rail housing includes a guide slot to which the distal end of the pin is slidably coupled.

7. The device for opening or closing a charging door according to claim 5, wherein: The guide roller is rotatably mounted on the pin, The guide rail housing includes the guide rail, and the guide roller is slidably mounted on the guide rail.

8. The device for opening or closing a charging door according to claim 5, wherein: The guide roller is rotatably mounted on the pin, The guide rail housing includes the guide rail, and the guide roller is slidably mounted on the guide rail. The guide rail includes a guide slot to which a distal end of the pin is slidably coupled.

9. The device for opening or closing a charging door according to claim 1, wherein: A first pin is connected to an upper end portion of the charging door and is slidably engaged with a first guide groove of the guide rail housing. A second pin is connected to a lower end portion of the charging door and is slidably engaged to a second guide groove of the guide rail housing.

10. The device for opening or closing a charging door according to claim 1, wherein: The first guide rail and the second guide rail are formed on the surface of the guide rail housing; The first guide roller and the second guide roller are respectively arranged on the first guide rail and the second guide rail, A first pin is connected to an upper end portion of the charging door and is slidably coupled to a first guide roller, A second pin is connected to a lower end portion of the charging door and is slidably coupled to a second guide roller.

11. The device for opening or closing a charging door according to claim 1, wherein: The first guide rail and the second guide rail are formed on a surface of the guide rail housing; and The first guide roller and the second guide roller are respectively arranged on the first guide rail and the second guide rail, A first pin is connected to an upper end portion of the charging door and is slidably coupled to a first guide groove formed in the first guide rail. A second pin is connected to a lower end portion of the charging door and is slidably coupled to a second guide groove formed in the second guide rail.

12. The device for opening or closing a charging door according to claim 1, wherein: A first pin is connected to an upper end portion of the charging door and is slidably coupled to a first guide groove formed in the guide rail housing, and The second pin is connected to a lower end portion of the charging door and is slidably coupled to a second guide groove formed in the guide rail housing.

13. The device for opening or closing a charging door according to claim 1, wherein: The guide rail housing is formed into a plurality of guide rail housings, including a first inner side and a second inner side of the charging hole; The guide rail is formed in plural to include a first guide rail and a second guide rail, the first guide rail and the second guide rail having the same guide path and formed on the front and rear surfaces of each of the guide rail housings; A first guide roller and a second guide roller are respectively provided on the first guide rail and the second guide rail, and are respectively coupled to an upper end portion and a lower end portion of the charging door.

14. The device for opening or closing a charging door according to claim 1, wherein: A charging information portion is provided at an edge portion of the guide rail housing.

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