JP2020059392A - Seat lock device - Google Patents

Abstract

To provide a seat lock device which can inhibit occurrence of abnormal noise.SOLUTION: A seat lock device fixes a striker to fix a seat back to a vehicle. The seat lock device has a cushioning member which receives a load of the striker, and the cushioning member has an opening.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a seat lock device, and is particularly applicable to a seat lock device including a cushioning member.

  BACKGROUND ART A seat back of a rear seat (rear seat) for an automobile includes a seat back that can be tilted forward in a front direction of a vehicle. This type of seat back is provided with a seat lock device on the upper side surface of the seat back, and is formed so as to be locked by a striker provided on the side surface on the vehicle body side by the seat lock device. The seat lock device is provided with a cushioning member that is deformed under pressure when the striker enters. The cushioning member is provided for the purpose of suppressing the impact at the time of entering the striker and suppressing the vibration (rattle) when the striker is locked by deforming under pressure (FIG. 4: JP-A-2013-2182: load receiver). See member 80).

JP, 2013-2182, A

  However, if the cushioning member is too soft, vibration (rattle) may occur when the striker is locked. When such vibration (rattle) occurs, an undesired noise may occur due to the metal portion of the seat lock device hitting the metal striker.

  An object of the present invention is to provide a seat lock device capable of suppressing the generation of abnormal noise.

  Other problems and novel features will be apparent from the description of the present specification and the accompanying drawings.

  The outline of a typical one of the present invention is briefly described as follows.

  That is, a seat lock device for fixing a seat back to a vehicle by fixing a striker, wherein the seat lock device has a cushioning member that receives the load of the striker, and the cushioning member has an opening.

  According to the seat lock device, it is possible to suppress the generation of abnormal noise.

FIG. 3 is a side view showing the vicinity of the rear seat of the vehicle according to the embodiment. It is a perspective view showing an example of composition of a seat lock device concerning an example. It is a figure which shows the structure of the buffer member of FIG. It is a figure which shows the state by which the buffer member of FIG. 3 was pressure-deformed by the striker. It is a figure which shows the buffer member structure which concerns on the modification 1. It is a figure which shows the structure of the buffer member of the modified example 2. It is a figure which shows the other structure of the buffer member of the modification 2.

  Embodiments of the present invention will be described below with reference to the drawings.

  Note that the disclosure is merely an example, and in order to make the description clearer, the width, thickness, shape, and the like of each part may be schematically represented in comparison with the actual mode. It does not limit the interpretation. In the specification and the drawings, the same elements as those described above with reference to the already-existing drawings are designated by the same reference numerals, and detailed description thereof may be appropriately omitted.

  FIG. 1 is a side view showing the vicinity of a rear seat of a vehicle according to an embodiment.

  A rear seat (hereinafter referred to as a rear seat) 1 for a vehicle includes a seat cushion 2 and a seat back 3. The seat back 3 is configured as a retractable rear seat that is capable of leaning forward in the front direction of the vehicle 6. A seat lock device 4 is provided on the upper side surface of the seat back 3. A striker 5 is provided on the side surface of the vehicle 6. When the seat lock device 4 meshes with the striker 5, the seat back 3 is fixed to the body of the vehicle 6.

  The seat lock device 4 may be provided on the side surface of the vehicle 6 and the striker 5 may be provided on the seat back 3.

  FIG. 2 is a perspective view showing a configuration example of the seat lock device according to the embodiment.

  The seat lock device 4 is provided on the entry groove 7 of the striker 5, the hook 8 that latches the striker 5 that has entered the entry groove 7, and the load of the striker 5 that has entered the entry groove 7 provided on the inner side of the entry groove 7. And a cushioning member 10 for receiving. The cushioning member 10 is fixed to the main surface side of the seat lock device 4 by a metal fixing member 12. The striker 5 that has entered the entry groove 7 is fixed by the cushioning member 10 and the hook 8.

  The cushioning member 10 can be formed by using an elastic member such as rubber, elastomer, or soft resin. The cushioning member 10 has a role of suppressing an impact when the striker 5 enters or suppressing rattling when the striker 5 is locked by being deformed under pressure. When the striker 5 is locked, the groove depth of the entrance groove 7 is controlled so that the striker 5 does not hit the inside of the entrance groove 7. The cushioning member 10 is provided with an opening 13. The opening 13 will be described in detail with reference to FIG.

  Since the configuration and operation of the seat lock device 4 are well known, the description thereof is omitted here.

  FIG. 3 is a diagram showing the cushioning member 10 of FIG.

  As shown in FIG. 3, the cushioning member 10 has a substantially trapezoidal shape in a top view. The cushioning member 10 is provided with an opening 13 such as a cylindrical hole. In this example, the opening 13 is a through hole provided so as to penetrate in the thickness direction of the cushioning member 10. Further, the opening 13 is provided so that the center of the circular shape is arranged on the line of the dotted line 5a indicating the entering direction of the striker 5. The side surface 14 of the cushioning member 10 is a portion to which the striker 5 abuts, and has a planar configuration that is not chamfered.

  FIG. 4 is a diagram showing a state in which the buffer member of FIG. 3 is deformed under pressure by a striker.

  When the striker 5 hits the side surface 14 of the cushioning member 10 and the cushioning member 10 is pressed and deformed by the striker 5, or when the striker 5 is fixed between the side surface 14 of the cushioning member 10 and the hook 8, the opening portion is formed. As shown in FIG. 4, 13 has a crushed shape from a circular shape in plan view. That is, the deformation of the cushioning member 10 by the striker 5 is exclusively due to the deformation of the opening 13 provided in the cushioning member 10.

  Therefore, when the striker 5 is inserted into the entry groove 7 and the striker 5 is pressed against the side surface 14 of the cushioning member 10, the opening 13 provided in the cushioning member 10 is deformed relatively easily. This allows the striker 5 to be fixed between the side surface 14 of the cushioning member 10 and the hook 8 relatively easily.

  Further, the deformation of the opening 13 provided in the cushioning member 10 causes a reaction force to be applied to the striker 5 from the cushioning member 10. Therefore, the striker 5 is securely fixed between the side surface 14 of the cushioning member 10 and the hook 8, so that the striker 5 is prevented from vibrating. As a result, the generation of abnormal noise can be reliably prevented.

  In the case where the cushioning member 10 does not have the opening 13 and the side surface 14 of the cushioning member 10 is chamfered, the pressure deformation of the cushioning member is due to the deformation of the chamfered side surface exclusively. In this case, the striker 5 was too soft to be securely fixed between the chamfered side surface of the cushioning member 10 and the hook 8, and the striker 5 vibrated to generate an abnormal noise.

  Further, in the case where the cushioning member 10 does not have the opening 13 and the side surface 14 of the cushioning member 10 is not chamfered, a strong force is required for pressurizing and deforming the cushioning member. In this case, in order to securely fix the striker 5 between the non-chamfered side surface of the cushioning member 10 and the hook 8, a strong force is required and there is a problem that it is difficult to handle.

  In the embodiment, it is possible to reliably prevent the generation of abnormal noise. It is also possible to solve the problem of being difficult to handle.

(Modification)
Next, some modified examples will be described.

(Modification 1)
5: is a figure which shows the structure of the buffer member which concerns on the modification 1. FIG. The opening 13 of the cushioning member 10 of the embodiment has a columnar shape, but is not limited to this. As shown in FIG. 5, in Modification 1, the buffer member 10a is provided with an opening 13a such as an elliptic cylindrical hole having an elliptical shape in plan view. The opening 13a is a through hole provided so as to penetrate in the thickness direction of the cushioning member 10a, like the opening 13 of the embodiment.

  In the elliptical opening 13a, the long axis of the ellipse is arranged along the direction perpendicular to the entering direction of the striker 5. In other words, the major axis of the ellipse is provided in the direction parallel to the side surface 14 of the cushioning member 10. On the other hand, the minor axis of the ellipse is arranged on the line 5a indicating the approach direction of the striker 5.

  With the configuration of the cushioning member 10a shown in the modified example 1, it is possible to obtain the same effect as that of the embodiment.

  The shape of the opening is not limited to the cylindrical shape or the elliptic cylindrical shape. The shape of the opening may be a triangular prism shape or a trapezoidal prism shape.

  When the opening is formed in the shape of a triangular prism, it is preferable that the corners of the triangular prism have a rounded shape in a plan view and the base of the triangular prism is provided in a direction parallel to the side surface 14. This makes it possible to prevent the buffer member 10 from being damaged even if the buffer member 10 is deformed by the striker 5.

  When the opening is formed in a trapezoidal columnar shape, the corners of the trapezoidal columnar shape should be rounded in plan view, and the base (long side) of the trapezoidal columnar shape should be provided in a direction parallel to the side surface 14. good. This makes it possible to prevent the buffer member 10 from being damaged even if the buffer member 10 is deformed by the striker 5.

(Modification 2)
Although the openings 13 and 13a of the embodiment and the modification 1 are configured by one cylindrical hole or one elliptic cylindrical hole, the invention is not limited thereto. The opening may be a combination of two openings.

  FIG. 6 is a diagram showing the configuration of the cushioning member of the second modification. 7: is a figure which shows the other structure of the buffer member of the modified example 2. FIG.

  As shown in FIG. 6, the cushioning member 10b has an opening 13b, and the opening 13b has a first opening 13b1 and a second opening 13b2. The first opening 13b1 is configured by a hole having a heart shape in plan view. The plurality of corners of the first opening 13b1 are rounded in a plan view. This is to prevent the buffer member 10b from being damaged even if the buffer member 10b is deformed by the striker 5.

  On the other hand, the second opening 13b2 is formed of a hole having a circular shape in plan view, like the opening 13 of the embodiment. In the second opening 13b2, the center of the circular shape is arranged on the line indicating the approach direction of the striker in plan view. The opening 13b, which is a combination of the first opening 13b1 and the second opening 13b2, is a through hole provided so as to penetrate in the thickness direction of the cushioning member 10b. The second opening 13b2 may have an elliptic cylindrical shape similar to that of the first modification.

  As shown in FIG. 7, the cushioning member 10c has an opening 13c, and the opening 13c has a first opening 13c1 and a second opening 13c2. The first opening 13c1 is formed by a trapezoidal hole in a plan view. The plurality of corners of the first opening 13c1 have a rounded shape in a plan view. This is to prevent the shock absorbing member 10c from being damaged even if the shock absorbing member 10b is deformed by the striker 5.

  On the other hand, the second opening 13c2 is formed of a hole having a circular shape in plan view, like the opening 13 of the embodiment. The opening 13c, which is a combination of the first opening 13c1 and the second opening 13c2, is provided so as to penetrate in the thickness direction of the cushioning member 10c. The second opening 13c2 may have an elliptic cylindrical shape as in the first modification.

  With the configuration of the cushioning members 10b and 10c shown in the modified example 2, it is possible to obtain the same effect as that of the embodiment.

  In Modification 2, the long sides of the first openings 13b1 and 13c1 are preferably provided on the side surface 14 side. This structure is also for preventing the buffer members 10b, 10c from being damaged even if the buffer members 10b, 10c are deformed by the striker 5.

  Although the invention made by the present inventor has been specifically described based on the examples, the present invention is not limited to the above-described embodiments and examples, and it goes without saying that various modifications can be made. .

1: Rear seat (rear seat)
2: seat cushion 3: seat back 4: seat lock device 5: striker 6: vehicle 7: entry groove 8: hooks 10, 10a, 10b, 10c: cushioning member 12: fixing members 13, 13a, 13b, 13c: openings 13b1 and 13c1: first opening 13b2 and 13c2: second opening 14: side surface

Claims (7)

A seat lock device for fixing a seat back to a vehicle by fixing a striker,
The seat lock device,
Having a cushioning member that receives the load of the striker,
The cushioning member has an opening,
Seat lock device. In claim 1,
The opening has a cylindrical through hole,
In the plan view, the seat lock device in which the center of the circular shape is arranged on the line indicating the approach direction of the striker in a plan view. In claim 1,
The opening has an elliptic cylindrical through hole,
In the seat lock device, the elliptical minor axis of the opening is arranged on a line indicating the entering direction of the striker in a plan view. In claim 1,
The opening is
A through hole having a first opening and a second opening,
The first opening has a heart shape,
The second opening has a cylindrical shape,
The seat lock device in which the second opening has a center of a circular shape arranged on a line indicating an approach direction of the striker in a plan view. In claim 4,
The seat lock device, wherein the first opening has a plurality of rounded corners in a plan view. In claim 1,
The opening is
A through hole having a first opening and a second opening,
The first opening has a trapezoidal shape,
The second opening has a cylindrical shape,
The seat lock device in which the second opening has a center of a circular shape arranged on a line indicating an approach direction of the striker in a plan view. In claim 6,
The seat lock device, wherein the first opening has a plurality of rounded corners in a plan view.

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