JP6762505B2 - Headrest - Google Patents

Description

The present invention relates to a headrest provided on an upper portion of a seat back of an automobile or the like.

Various headrests are known as headrests provided on the upper part of the seat back of an automobile or the like. For example, a reclining seat of a high-end minivan has a temporal receiving portion (a portion supporting the user's temporal region) on both sides of the occipital receiving portion (a portion supporting the user's occipital region) in the headrest. However, a device capable of adjusting the position of the occipital region receiving portion (see, for example, Patent Document 1) may be adopted.

Japanese Unexamined Patent Publication No. 2016-132299

However, the conventional headrest having a structure in which the position of the temporal receiving part can be adjusted has a large number of parts and a complicated structure, so that not only is the price high, but the mass is heavy (the conventional one is close to 2 kg). It has a mass.) If the headrest is heavy, the inertial force acting on the headrest in the event of a vehicle collision or sudden braking increases. Therefore, the seat back provided with the headrest needs to be strengthened so as to be able to withstand the above-mentioned inertial force, and the mass of the seat back itself is inevitably heavy. Therefore, it becomes difficult to reduce the weight of the vehicle, and it becomes difficult to reduce the fuel consumption.

The present invention has been made to solve the above problems, and the number of parts of a headrest having a structure in which the position of the temporal receiving portion can be adjusted is reduced to simplify the structure and reduce the weight of the headrest. The purpose is to reduce costs.

The above issues are
Fixed side member and
An adjustment side member that can be rotated and adjusted with respect to the fixed side member,
Consists of
The temporal receiving member for supporting the user's temporal region has a rear position in an unused state and a front position in a used state in which the temporal receiving member is rotated forward from the rear position.
Can rotate between
and,
A headrest with a structure that can lock the temporal receiving member in use.
The fixed side member is at least
A headrest stay that has a horizontal stay part and a pair of left and right vertical stay parts to form a gate shape,
A rotating urging spring that constantly urges the temporal receiving member backward,
It is supposed to be equipped with
One of the members constituting the fixed side member is provided with a lock opening, a cam portion A ₁ , a forward rotation restricting contact portion B _1, and a rear rotation restricting contact portion C _1, while the rear rotation restricting contact portion C ₁ is provided.
The adjustment side member is at least
A case-shaped temporal receiving member having a front rotation restricting contact portion B ₂ and a rear rotation restricting contact portion C ₂ rotatably supported in the front-rear direction with respect to the fixed side member.
Slidably supported against the side of the head receiving member, and a lock lever having a cam portion A _2,
A lock urging spring for constantly urging the lock lever to the lock side,
Is supposed to be equipped with
When the temporal receiving member is in the rear position, the rear rotation restricting contact portion C ₁ and the rear rotation restricting contact portion C ₂ come into contact with each other to restrict the rear rotation of the temporal receiving member, and While the forward rotation of the temporal receiving member is regulated by the urging force of the rotating urging spring, a forward force exceeding the urging force of the rotating urging spring (for example, a torque of about 2 to 3 Nm) is applied. When the generated force) is applied, the temporal receiving member can be rotated forward.
When the temporal receiving member rotates forward from the rear position to the front position, the cam portion A ₂ passes over the cam portion A ₁ while the lock lever resists the lock urging spring, and the lock lever becomes the lock opening. Fit and
When the temporal receiving member is in the forward position, that the forward rotation regulating contact portion B ₁ and the front rotation regulating contact portion B ₂ are in contact, and, combined lock lever fitted in the locking opening By doing so, the forward rotation and the backward rotation of the temporal receiving member are restricted, while by operating the lock lever to the unlock side, the lock lever is removed from the lock opening and the temporal region is released. The solution is to provide a headrest characterized in that the receiving member can be moved to a rear position by the action of a rotating urging spring.

In the following, for convenience of explanation, the headrest of the present invention having the above structure may be referred to as a "basic type headrest".

The basic type headrest of the present invention has a structure in which the position of the temporal receiving portion can be adjusted, but as described above, the number of parts is small and the structure is simple. For this reason, it is possible not only to reduce the manufacturing cost of the headrest but also to reduce the weight. The weight of the basic type headrest of the present invention can be sufficiently suppressed to about 1 to 1.3 kg. Therefore, not only the weight of the headrest itself can be reduced, but also the inertial force acting on the headrest in the event of a vehicle collision or sudden braking can be reduced. Therefore, the weight of the seat back equipped with the headrest should be reduced. Will also be possible. Therefore, it is possible to reduce the weight of the vehicle and further reduce the fuel consumption.

In the basic type headrest of the present invention, if the member provided with the lock opening, the cam portion A ₁ , the forward rotation restricting contact portion B ₁ and the rear rotation restricting contact portion C ₁ , is a fixed side member. Not particularly limited. The locking opening, the cam portion A ₁ , the forward rotation restricting contact portion B ₁ and the rear rotation restricting contact portion C ₁ may all be provided on the same member, or a part or all thereof may be different. It may be provided on the member. For example, the following configuration can be adopted.

Primarily,
The occipital region receiving member is integrally provided with the occipital region receiving portion for supporting the occipital region of the user.
Lock opening and a metal guide plate having a cam portion A _1, as the stationary member, fixed to the headrest stay,
Examples thereof include a configuration in which the vertical stay portion of the metal headrest stay functions as the forward rotation restricting contact portion B ₁ and the rear rotation restricting contact portion C ₁ .
In the following, for convenience of explanation, the basic type headrest having the above configuration may be referred to as a "first basic type headrest".

In the first basic type headrest, a member (guide plate) for providing a lock opening and a cam portion A ₁ and a member for providing a front rotation regulation contact portion B ₁ and a rear rotation regulation contact portion C ₁ (a member for providing a rear rotation regulation contact portion C ₁ ). Since the headrest stay) can be made of a metal member, there is an advantage that the lock strength of the lock lever and the regulation strength of the front-back rotation of the temporal support member can be increased. Be done.

Secondly,
A case-shaped occipital region receiving member for supporting the occipital region of the user is fixed to the headrest stay as a fixed side member.
Examples thereof include a configuration in which a lock opening, a cam portion A ₁ , a forward rotation restricting contact portion B ₁ and a rear rotation restricting contact portion C ₁ are provided on the back of the head receiving member.
In the following, for convenience of explanation, the basic type headrest having the above configuration may be referred to as a “second basic type headrest”.

In the first basic type headrest described above, the part that supports the user's temporal region (temporal receiving member) is integrated with the portion that supports the user's occipital region (occipital receiving portion). On the other hand, in the second basic type headrest, the part that supports the user's temporal region (temporal receiving member) is a separate member from the portion that supports the user's occipital region (occipital receiving member). ing. Therefore, the second basic type headrest has an advantage that the position of the temporal receiving member can be adjusted independently of the occipital receiving member.

In addition, the above issues
Fixed side member and
An adjustment side member that can be rotated and adjusted with respect to the fixed side member,
Consists of
The temporal receiving member for supporting the temporal region of the user and the occipital receiving member for supporting the occipital region of the user are respectively.
Rear position and
The front position rotated forward from the rear position and
Can rotate between
and,
A headrest with a structure that can lock the temporal receiving member in use.
The fixed side member is at least
Horizontal stay part and has a pair of left and right vertical stays portion constitutes a portal, a headrest stay having a forward rotation regulating contact portion B ₁ and the rear rotation regulating contact portion C _1,
A stopper plate having a forward rotation restricting contact portion D ₁ and a rear rotation restricting contact portion E ₁
A rotating urging spring that constantly urges the occipital region receiving member forward,
It is supposed to be equipped with
The adjustment side member is at least
A case-shaped temporal receiving member having a front rotation restricting contact portion B ₂ and a rear rotation restricting contact portion C ₂ rotatably supported in the front-rear direction with respect to the fixed side member.
To support the occipital of the user, independently of the side head receiving member rotatably supported relative to the stationary member, the locking opening, the cam portion A _1, forward rotation regulating abutment A case-shaped occipital region receiving member having a portion D ₂ and a rearward rotation restricting contact portion E ₂
Slidably supported against the side of the head receiving member, and a lock lever having a cam portion A _2,
A lock urging spring for constantly urging the lock lever to the lock side,
Is supposed to be equipped with
When the temporal receiving the member is in the forward position or rear position, when the occipital receiving member is moving backwards once backward position from the forward position while the locking lever is Aragai the lock urging spring, cam portion A ₂ cam portion After passing A ₁ , the lock lever fits into the lock opening,
When the temporal receiving member is in the front position or the rear position and the occipital receiving member is in the rear position, the lock lever is fitted in the lock opening, so that the occipital receiving member can rotate forward and While backward rotation is restricted, by operating the lock lever to the unlock side, the lock lever is removed from the lock opening and the occipital region receiving member is moved to the forward position by the action of the rotation urging spring. As well as being able to
When both the temporal receiving member and the occipital receiving member are in the front position, the temporal receiving member is in an unused state, and the front rotation restricting contact portion B ₁ and the front rotation restricting contact portion B ₂ There it contacts, and, by a front rotation regulating contact portion D ₁ and the front rotation regulating contact portion D ₂ abuts, and the front pivot of the side head receiving member and occipital receiving member is restricted In addition, while the backward rotation of the occipital region receiving member is restricted by the urging force of the rotating urging spring, a backward force (for example, about 2 to 3 Nm) exceeding the urging force of the rotating urging spring is applied. When the generated force) is applied, the occipital region receiving member can be rotated backward.
When the temporal receiving member is in the front position and the occipital receiving member is in the rear position, the temporal receiving member is in the used state, and the front rotation restricting contact portion B ₁ and the front rotation restricting contact portion B are in use. _By contacting with ₂ , the forward rotation of the occipital region receiving member is restricted.
Side head receiving member is in the rear position, when the occipital receiving member is in the forward position, the side head receiving member is an unused state, the rear rotation regulating contact portion C ₁ and a rear rotation regulating contact portion When it comes into contact with C ₂ , the backward rotation of the temporal receiving member is restricted.
When both the temporal receiving member and the posterior head receiving member are in the rear position, the temporal receiving member is in the used state, and the rear rotation restricting contact portion C ₁ and the rear rotation restricting contact portion C ₂ are in use. The rearward rotation of the temporal support member and the rear head receiving member is restricted by the contact and the contact between the rear rotation restricting contact portion E ₁ and the rear rotation restricting contact portion E _2. It is also solved by providing a headrest characterized by the fact that it has been made.

In the following, for convenience of explanation, the headrest of the present invention having the above structure may be referred to as an “application type headrest”.

In the above-mentioned basic type headrest, even in the second basic type headrest in which the temporal receiving member is provided as a member different from the occipital receiving member, the front-back position of the occipital receiving member is different from the temporal receiving member. Could not be adjusted independently. On the other hand, in the above-mentioned application type headrest, in addition to the temporal receiving member and the occipital receiving member being separate members, the occipital receiving member rotates independently of the temporal receiving member. It is an adjustment side member supported by a fixed side member in a movable state. Therefore, the front-rear position of the occipital region receiving member can be adjusted independently of the temporal region receiving member. Therefore, in the application type headrest, it is possible to change the form of the headrest in various ways depending on the situation, such as when the seat back is reclining or not. The application type headrest has a slightly larger number of parts than the basic type headrest, but it still has a simple structure with a small number of parts. Therefore, even in the application type headrest, it is possible to reduce the weight and the manufacturing cost.

As described above, according to the present invention, it is possible to reduce the number of parts of the headrest having a structure in which the position of the temporal receiving portion can be adjusted, simplify the structure, and reduce the weight and cost of the headrest. become.

It is a perspective view which showed the state which (a) the headrest of the 1st Embodiment is seen from the front diagonally upper left and (b) the rear diagonally upper left when the temporal support member is in the front position. It is a perspective view which showed the state which disassembled the headrest of 1st Embodiment seen from the front diagonally upper left. The first embodiment when (a) the temporal receiving member is in the rear position and (b) when the temporal receiving member is in the front position, the headrest is cut at a substantially intermediate portion in the left-right direction and viewed from the left. It is sectional drawing which showed the state. A perspective view showing a state in which the headrest of the second embodiment when (a) the temporal receiving member is in the rear position and (b) the temporal receiving member is in the front position, as viewed from the front diagonally upper left. Is. A perspective view showing a state in which the headrest of the second embodiment when (a) the temporal receiving member is in the rear position and (b) the temporal receiving member is in the front position, as viewed from the rear diagonally upper left. Is. It is a perspective view which showed the state which disassembled the headrest of 2nd Embodiment, and was seen from the front diagonally upper left. The headrest of the second embodiment when (a) the temporal receiving member is in the rear position and (b) when the temporal receiving member is in the front position is cut at a substantially intermediate portion in the left-right direction from the left. It is sectional drawing which showed the seen state. It is a perspective view which showed the state which disassembled the headrest of 3rd Embodiment, and was seen from the front diagonally upper left. It is a perspective view which showed the state in the process of assembling the headrest of the 3rd Embodiment seen from the rear diagonally upper left. (A) When both the temporal receiving member and the occipital receiving member are in the front position, (b) when the temporal receiving member is in the front position and the occipital receiving member is in the rear position, (c) temporal. The headrest of the third embodiment when the part receiving member is in the rear position and the occipital receiving member is in the front position, and (d) when both the temporal receiving member and the occipital receiving member are in the rear position. It is sectional drawing which showed the state which was cut at the substantially middle part in the left-right direction and was seen from the left. A perspective view showing a state in which the headrest of the fourth embodiment when (a) the temporal receiving member is in the rear position and (b) the temporal receiving member is in the front position, as viewed from the rear diagonally upper left. Is.

A preferred embodiment of the headrest of the present invention will be described more specifically with reference to the drawings. In the following, the headrest of the present invention will be described with reference to four embodiments (first embodiment, second embodiment, third embodiment and fourth embodiment) as examples. However, the technical scope of the headrest of the present invention is not limited to those of these embodiments. The headrest of the present invention can be appropriately modified as long as the gist of the invention is not impaired. In FIGS. 1 to 11 described later, the x-axis, the y-axis and the z-axis are represented, but in the following, the positive side in the x-axis direction is the "left" side, the negative side in the x-axis direction is the "right" side, and y. The negative side in the axial direction will be described as the "front" side, the positive side in the y-axis direction will be referred to as the "rear" side, the positive side in the z-axis direction will be referred to as the "upper" side, and the negative side in the z-axis direction will be referred to as the "lower" side.

1. 1. Headrest of the first embodiment 1.1 Outline of the headrest of the first embodiment First, the headrest of the first embodiment will be described. The headrest of the first embodiment corresponds to the above-mentioned "first basic type headrest". FIG. 1 is a perspective view showing a state in which the headrest of the first embodiment when the temporal receiving member 60 is in the front position is viewed from (a) diagonally upper left front and (b) diagonally upper left rearward. FIG. 2 is a perspective view showing a state in which the headrest of the first embodiment is disassembled and viewed from the front diagonally upper left. FIG. 3 shows that the headrest of the first embodiment when (a) the temporal receiving member 60 is in the rear position and (b) the temporal receiving member 60 is in the front position is cut at a substantially intermediate portion in the left-right direction. It is a cross-sectional view showing the state seen from the left.

As shown in FIG. 2, the headrest of the first embodiment is composed of the fixed side members 10 to 30 and the adjusting side members 60 to 80, and is used to support the user's temporal region. As shown in FIG. 3, the temporal receiving member 60 is in the rear position in the unused state ((a) in the same figure) and in the used state in which the temporal receiving member 60 is moved forward at a rotation angle of 15 to 30 ° from the rear position. It has a structure that can rotate between the front position ((b) in the figure) and a structure that can lock the temporal receiving member 60 in the used state. The adjusting side members 60 to 80 are attached to the fixed side members 10 to 30 in a state in which the rotation can be adjusted.

In the headrest of the first embodiment, as shown in FIG. 2, the fixed side members 10 to 30 are composed of the headrest stay 10, the guide plate 20, and the rotating urging spring 30, and the adjusting side members 60 to 30 are formed. The 80 is composed of a temporal support member 60, a lock lever 70, and a lock urging spring 80. Hereinafter, each member constituting the headrest of the first embodiment will be described.

1.2 Headrest stay The headrest stay 10 is for supporting the headrest at a predetermined height. As shown in FIG. 2, the headrest stay 10 is formed in a gate shape having a pair of left and right vertical stay portions 11 and 12 and a horizontal stay portion 13 connecting the upper ends of the vertical stay portions 11 and 12. The headrest stay 10 can be attached to a stay holder provided at the upper part of a seat back (not shown) so that the lower ends of the vertical stay portions 11 and 12 can be moved up and down (height can be adjusted). It is fixed to the seat back frame housed inside the back via a predetermined bracket or the like.

In the headrest of the first embodiment, the rear side is in the upper outer peripheral surface of the vertical stay portion 11, the front side of the upper outer peripheral face of the front rotation regulating contact portion B _1, and the vertical stay portion 11, the rear times and has a dynamic regulatory contact portion C _1. The forward rotation restricting contact portion B ₁ regulates the forward rotation of the temporal receiving member 60 by abutting against the forward rotation restricting contact portion B ₂ provided inside the temporal receiving member 60. It is a part to do. On the other hand, the rear rotation restricting contact portion C ₁ abuts on the rear rotation restricting contact portion C ₂ provided inside the temporal receiving member 60, thereby rotating the temporal receiving member 60 backward. It is a part to regulate.

1.3 Guide plate The guide plate 20 is for locking the lock lever 70, which will be described later. In the headrest of the first embodiment, as shown in FIG. 2, the guide plate 20 is made of metal, which is fixed to the headrest stay 10 so as to connect the slightly upper portions of the vertical stay portions 11 and 12. It is a strip-shaped member of. The guide plate 20, the lock opening F ₁ and the cam portion A ₁ is provided. Lock opening F ₁ has a portion for fitting the locking portion 71 of the lock lever 70 (the lower end). On the other hand, the cam portion A ₁ is a portion for acting on the cam portion A ₂ provided at the lower end portion of the lock lever 70. In the headrest of the first embodiment, the corner portion of the upper surface trailing edge side of the guide plate 20 is to function as a cam portion A _1.

1.4 Rotating urging spring The rotating urging spring 30 is for always urging the temporal receiving member 60 backward. The form of the rotary urging spring 30 is not particularly limited as long as it can exhibit the above functions. In the headrest of the first embodiment, as shown in FIG. 2, the rotation urging spring 30 is a coil spring. The rotating urging spring 30 is extrapolated to the lateral stay portion 13 of the headrest stay 10. One end of the rotary urging spring 30 is connected and fixed to a spring fixing portion 14 provided on the headrest stay 10, and the other end of the rotary urging spring 30 is a spring provided on the temporal receiving member 60. It is connected and fixed to the fixed portion (omitted in FIG. 2).

1.5 Temporary receiving member The temporal receiving member 60 is for supporting the temporal region of the user of the headrest. The outer surface of the temporal receiving member 60 is usually covered with a cushioning material (not shown) and a skin. In the headrest of the first embodiment, the temporal receiving member 60 is for supporting the case-shaped left side portion 61 for supporting the left temporal region of the user and the right temporal region of the user. Operation opening (strictly speaking, the rear surface side of the occipital region receiving portion 50 integrally provided with the temporal region receiving member 60, which will be described later) of the case-shaped right side portion 62 and the temporal region receiving member 60. As shown in FIG. 1 (b), it is configured in combination with a frame-shaped portion 63 attached to the peripheral edge portion (opening for exposing the operating portion 72 of the lock lever 70). Usually, the left side portion 61, the right side portion 62, and the frame-shaped portion 63 are all resin injection-molded products. In the headrest of the first embodiment, as shown in FIG. 2, the occipital region receiving portion 50 for supporting the occipital region of the user of the headrest is also provided integrally with the temporal region receiving member 60.

As shown in FIG. 2, a plurality of ribs and fins are provided inside the temporal receiving member 60, and some of them are the front rotation regulation contact portion B ₂ and the rear rotation regulation. It is designed to be the contact portion C ₂ . The forward rotation restricting contact portion B ₂ is a portion for abutting the forward rotation restricting contact portion B ₁ of the headrest stay 10 described above in order to restrict the forward rotation of the headrest. On the other hand, the rear rotation restricting contact portion C ₂ is a portion for abutting the rear rotation restricting contact portion C ₁ of the headrest stay 10 described above in order to restrict the rear rotation of the headrest. Inside the temporal receiving member 60, a spring fixing portion (not shown) for connecting and fixing the other end of the rotary urging spring 30 is also provided.

1.6 Lock lever The lock lever 70 fixes the temporal receiving member 60 so that the temporal receiving member 60 in the used state (front position) does not rotate with respect to the headrest stay 10 (fixed side member). It is a member for locking with respect to the side member. On the other hand, when trying to put the temporal receiving member 60 in the used state (front position) into the unused state (rear position), the lock lever 70 is operated and slid upward to release the above lock. It can be released. In the headrest of the first embodiment, as shown in FIG. 2, the lock lever 70 is a plate-shaped member having a lock portion 71 (lower end portion) and an operation portion 72 (upper end portion), and is temporal. It is supported on the rear surface of the part receiving member 60 (more strictly, the rear surface of the occipital receiving portion 50 integrally formed with the temporal receiving member 60) in a vertically slidable state. Locking portion 71 of the lock lever 70 (the lower end) is, by fitting the locking opening F ₁ of the guide plate 20, so as to be able to restrict the rotation of the side head receiving member 60 It has become. At the lower end of the lock lever 70, a cam portion A ₂ for acting on the cam portion A ₁ of the guide plate 20 described above is also provided.

1.7 Lock urging spring The lock urging spring 80 is for constantly urging the lock lever 70 to the lock side (lower side in the headrest of the first embodiment). The form of the lock urging spring 80 is not particularly limited as long as it can exhibit the above functions. In the headrest of the first embodiment, as shown in FIG. 2, the lock urging spring 80 is a coil spring. One end (upper end) of the lock urging spring 80 is connected and fixed to a spring fixing portion 73 provided on the lock lever 70, and the other end of the lock urging spring 80 is provided on the temporal receiving member 60. It is connected and fixed to the spring fixing portion (omitted in FIG. 2).

1.8 Operation of the headrest of the first embodiment Next, the operation of the headrest of the first embodiment will be described.

In the headrest of the first embodiment, when the temporal receiving member 60 is in the rear position shown in FIG. 3A (when the temporal receiving member 60 is in an unused state), the rear rotation restriction hit. rearward turning of the contact portion C ₁ and a rear rotation regulating contact portion C ₂ and the side head receiving member 60 abuts is adapted to the state of being restricted. Further, at this time, the forward rotation of the temporal receiving member 60 is also restricted by the urging force of the rotating urging spring 30. However, the locking portion 72 of the lock lever 70 is in the locking opening F ₁ of the guide plate 20 is not fitted. Therefore, when a forward force exceeding the urging force of the rotary urging spring 30 is applied to the temporal receiving member 60, the temporal receiving member 60 can be rotated forward. As described above, in the headrest of the first embodiment, since the occipital region receiving portion 50 is integrally formed with the temporal region receiving member 60, when the temporal region receiving member 60 is rotated forward, the head rest is formed. The occipital region receiving portion 50 also rotates integrally with the temporal region receiving member 60.

Side head receiving member 60, when the rotated forward from the rear position shown in FIG. 3 (a), the cam portion A ₂ of the lock lever 70 abuts against the cam portion A ₁ of the guide plate 20. As described above, the lock lever 70 is where is biased to the lock side (lower side) by the lock urging spring 80, the cam portion A ₁ is applied to the cam portion A _2, lock the lock lever 70 is It is designed to move to the unlock side (upper side) while resisting the urging spring 80. When the cam portion A ₂ passes over the cam portion A ₁ , the lock portion 71 (lower end portion) of the lock lever 70 fits into the lock opening F ₁ and receives the temporal region as shown in FIG. 3 (b). The member 60 is locked to the guide plate 20 (fixed side member).

By the time the temporal receiving member 60 is in the forward position shown in FIG. 3 (b) (when side head receiving member 60 is in use), the forward rotation regulating contact portion B ₁ and the forward rotation restricting The forward rotation and the backward rotation of the temporal receiving member 60 are restricted by the contact with the contact portion B ₂ and the lock lever 70 being fitted to the lock opening F _1. .. The temporal receiving member 60 at this time is in the front position and is in a state where it can be used.

When moving the temporal receiving member 60 from the front position shown in FIG. 3B to the rear position shown in FIG. 3A again, the operating portion 72 of the lock lever 70 is operated. The lock lever 70 is moved to the unlock side (upper side). Thus, the locking portion 71 of the lock lever 70 is disengaged from the lock opening F _1. When the lock lever 70 is disengaged from the lock opening F _1, side head receiving member 60 by the biasing force of the rotation urging spring 30, it is automatically pivoted to the rear position shown in FIG. 3 (a).

2. 2. The headrest of the second embodiment Next, the headrest of the second embodiment will be described. The headrest of the second embodiment corresponds to the above-mentioned "second basic type headrest". In the following, among the configurations of the headrest of the second embodiment, the configurations different from the headrest of the first embodiment will be mainly described. As the configuration not particularly mentioned in the headrest of the second embodiment, the same configuration as described in the headrest of the first embodiment can be adopted.

FIG. 4 shows the headrest of the second embodiment when (a) the temporal receiving member 60 is in the rear position and (b) the temporal receiving member 60 is in the front position, as viewed from diagonally forward upper left. It is a perspective view which showed the state. FIG. 5 shows the headrest of the second embodiment when (a) the temporal receiving member 60 is in the rear position and (b) the temporal receiving member 60 is in the front position, as viewed diagonally from the upper left rear. It is a perspective view which showed the state. FIG. 6 is a perspective view showing a state in which the headrest of the second embodiment is disassembled and viewed from the front diagonally upper left. FIG. 7 shows the headrest of the second embodiment when (a) the temporal receiving member 60 is in the rear position and (b) the temporal receiving member 60 is in the front position at a substantially intermediate portion in the left-right direction. It is sectional drawing which showed the state which was cut and viewed from the left.

In the headrest of the first embodiment, as shown in FIG. 1, the temporal receiving member 60 is integrally formed with the occipital receiving portion 50, and when the temporal receiving member 50 rotates, it is formed. As shown in FIG. 3, the occipital region receiving portion 50 also rotates integrally. On the other hand, in the headrest of the second embodiment, as shown in FIG. 4, the occipital region receiving portion 50 (occipital region receiving member) is provided separately from the occipital region receiving member 60, and the occipital region receiving member 60 is provided separately. As shown in FIG. 7, the occipital region receiving member 50 does not rotate even if the member 50 rotates. Therefore, the headrest of the second embodiment has an advantage that the position of the temporal receiving member 60 can be adjusted independently of the occipital receiving member 50. In the headrest of the second embodiment, the occipital region receiving member 50 is attached to the headrest stay 10 in a non-rotating state, and constitutes a fixed side member.

Further, in the headrest of the first embodiment, as shown in FIG. 2, whereas the locking opening F ₁ and the cam portion A ₁ is provided on the base member 20, the headrest of the second embodiment, As shown in FIG. 6, a locking opening F ₁ and a cam portion A ₁ are provided on the back head receiving member 50. Specifically, the occipital region receiving member 50 is configured by combining a case-shaped front side portion 51 and a rear side portion 52, of which the rear head portion 52 projects rearward from the rear surface. the provided portion, is provided with a locking opening F ₁ and the cam portion a _1. Therefore, the headrest of the second embodiment does not need to be provided with the guide plate 20 in the headrest of the first embodiment.

Further, in the headrest of the first embodiment, as shown in FIG. 2, the front rotation regulation contact portion B ₁ and the rear rotation regulation contact portion C ₁ are formed on the vertical stay portions 11 and 12 of the headrest stay 10. However, in the headrest of the second embodiment, as shown in FIG. 7, the front rotation restricting contact portion B ₁ and the rear rotation restricting contact portion C ₁ are provided on the occipital region receiving member 50. ing. Specifically, occipital receiving member and the rear surface 50 is adapted to function as a front rotation regulating contact portion B _1, occipital receiving side uneven portion provided on the rear upper portion of the member 50 rearward rotation regulating those and functions as the contact portion C _1. As shown in FIG. 7 (b), the front surface (forward rotation restricting contact portion B ₂ ) of the intermediate portion of the temporal receiving member 60 abuts on the forward rotation restricting contact portion B ₁ to rotate backward. As shown in FIG. 7A, the upper edge portion (rear rotation regulation contact portion C ₂ ) of the intermediate portion of the temporal receiving member 60 comes into contact with the motion regulation contact portion C ₁ . ing.

Since the operation of the headrest of the second embodiment is the same as that of the headrest of the first embodiment except that the occipital region receiving member 50 (occipital region receiving portion) does not rotate, detailed description thereof will be omitted.

3. 3. The headrest of the third embodiment Next, the headrest of the third embodiment will be described. The headrest of the third embodiment corresponds to the above-mentioned "application type headrest". In the following, among the configurations of the headrest of the third embodiment, the configurations different from the headrest of the second embodiment will be mainly described. As the configuration not particularly mentioned in the headrest of the third embodiment, the same configuration as described in the headrest of the second embodiment can be adopted.

FIG. 8 is a perspective view showing a state in which the headrest of the third embodiment is disassembled and viewed from the front diagonally upper left. FIG. 9 is a perspective view showing a state in which the headrest of the third embodiment is being assembled as viewed from the rear diagonally upper left. In FIG. 10, when (a) the temporal receiving member 60 and the occipital receiving member 50 are both in the front position, (b) the temporal receiving member 60 is in the front position and the occipital receiving member 50 is in the rear position. At one time, (c) the temporal receiving member 60 is in the rear position and the occipital receiving member 50 is in the front position, and (d) the occipital receiving member 60 and the occipital receiving member 50 are both in the posterior position. It is sectional drawing which showed the state which the headrest of the 3rd Embodiment at the time of is cut at the substantially middle part in the left-right direction, and was seen from the left.

In the headrest of the second embodiment, as shown in FIG. 7, only the temporal receiving member 60 rotates between the rear position and the front position, and the occipital receiving member 50 becomes a non-rotating fixed side member. Was there. On the other hand, in the headrest of the third embodiment, as shown in FIG. 10, the temporal receiving member 60 and the occipital receiving member 50 are the adjusting side members that rotate between the rear position and the front position, respectively. It has become. In other words, the occipital region receiving member 50 is rotatably supported by the fixed side member (horizontal stay portion 13 of the headrest stay 10) independently of the temporal region receiving member 60.

Further, in the headrest of the second embodiment, as shown in FIG. 7, the front rotation regulation contact portion B ₁ and the rear rotation regulation contact portion C ₁ are provided on the back head receiving member 50. In contrast, in the headrest of the third embodiment, as shown in FIG. 8, the rear side is at the intermediate portion outer peripheral surface of the vertical stay portion 11, functions as a forward rotation regulating contact portion B _1, the vertical stay portion 11 and 12 the front side in the intermediate portion outer peripheral surface of, and functions as backward rotation regulating contact portion C _1. The forward rotation regulation contact portion B ₁ abuts on the rear end portion (forward rotation regulation contact portion B ₂ ) of the stay insertion hole 66 (FIG. 8) provided near the bottom of the temporal support member 60. As a result, it is a part for restricting the forward rotation of the temporal receiving member 60. On the other hand, the rear rotation restricting contact portion C ₁ hits the front end portion (rear rotation restricting contact portion C ₂ ) of the stay insertion hole 66 (FIG. 9) provided near the bottom of the temporal support member 60. By contacting, it is a part for restricting the backward rotation of the temporal receiving member 60.

Further, as shown in FIG. 8, the headrest of the third embodiment is provided with a stopper plate 90 which is not provided in the headrest of the second embodiment. The stopper plate 90 is a metal plate-shaped member bent into a hat-like cross section, and is fixed to the lateral stay portion 13 of the headrest stay 10 in a state of being fitted from behind. The stopper plate 90 has a forward rotation restricting contact portion D ₁ and a rear rotation restricting contact portion E ₁ . As shown in FIGS. 9 and 10 (a), the forward rotation restricting contact portion D ₁ is attached to the forward rotation restricting contact portion D ₂ provided on the upper rear surface side of the front side portion 51 of the occipital region receiving member 50. By abutting, it is a part for restricting the forward rotation of the occipital region receiving member 50. On the other hand, as shown in FIGS. 9 and 10 (d), the rear rotation restricting contact portion E ₁ is provided on the rear surface side upper portion of the front side portion 51 of the occipital region receiving member 50. _By contacting with ₂ , it is a part for restricting the backward rotation of the occipital region receiving member 50.

Furthermore, in the headrest of the second embodiment, the rotary urging spring 30 always urges the temporal receiving member 60 backward. On the other hand, in the headrest of the third embodiment, the rotation urging spring 30 constantly urges the occipital region receiving member 50 forward.

The headrest of the third embodiment described above performs the following operations.

That is, when the occipital receiving member 60 is in the front position or the rear position and the occipital receiving member 50 is rotated backward from the front position to the rear position (from the state of FIG. 10A to FIG. 10B). When the state is changed, or when the state shown in FIG. 10 (c) is changed to the state shown in FIG. 10 (d)), the cam portion A ₂ moves to the cam portion A while the lock lever 70 resists the lock urging spring 80. _The lock lever 70 is fitted into the lock opening F1 after passing over ₁ .

Further, when the temporal receiving member 60 is in the front position or the rear position and the occipital receiving member 50 is in the rear position (when the state is in the state of FIG. 10B or the state of FIG. 10D). is), when in the in the lock lever 70 is fitted into the lock opening F _1, while the forward rotation and backward rotation of the occipital support member 50 is restricted, the unlocking side lock lever 70 ( by operating the upper side), remove the lock lever 70 from the lock opening F _1, occipital receiving member 50 rotation urging spring 30 (as can be moved to the forward position by the action of FIG. 8) It has become.

The headrest of the third embodiment can realize the four states shown in FIGS. 10A to 10D by performing the above-mentioned operations.

First, as shown in FIG. 10A, when both the temporal receiving member 60 and the occipital receiving member 50 are in the front position, the front rotation restricting contact portion B ₁ and the front rotation restricting contact portion B ₂ comes into contact with each other, and the front rotation restricting contact portion D ₁ and the front rotation restricting contact portion D ₂ come into contact with each other to rotate the temporal region receiving member 60 and the occipital region receiving member 50 forward. Is regulated, and the backward rotation of the occipital region receiving member 50 is regulated by the urging force of the rotating urging spring 30. However, if a backward force exceeding the urging force of the rotation urging spring 30 is applied to the occipital region receiving member 50, the occipital region receiving member 50 can be rotated rearward. In the state shown in FIG. 10A, the headrest itself is in the used state, but the temporal receiving member 60 is in the unused state. The state shown in FIG. 10A is used, for example, when the headrest is used with the seat back raised but the temporal receiving member 60 is not used.

Further, as shown in FIG. 10 (b), there temporal receiving member 60 is in the forward position, when the occipital receiving member 50 is in the rear position, the forward rotation regulating contact portion B ₁ and the front rotation regulating those The forward rotation of the occipital region receiving member 60 is restricted by the contact with the contact portion B ₂ . In the state shown in FIG. 10B, the temporal receiving member 60 is in a used state (a state in which the occipital receiving member 50 projects forward from the front surface). The state shown in FIG. 10B is used, for example, when the headrest is used with the seat back raised and the temporal receiving member 60 is also desired to be used.

Furthermore, as shown in FIG. 10 (c), located in the temporal receiving member 60 is the rear position, when the occipital receiving member 50 is in the forward position, the rear rotation regulating contact portion C ₁ and a rear rotation regulating those The rearward rotation of the occipital region receiving member 60 is restricted by the contact with the contact portion C ₂ . In the state shown in FIG. 10C, the temporal receiving member 60 is in an unused state. The state shown in FIG. 10C is used, for example, when the headrest is used with the seat back tilted (reclining) but the temporal receiving member 60 is not used.

Furthermore, as shown in FIG. 10 (d), when both the sides of the head receiving member 60 and the occipital receiving member 50 is in the rear position, the rear rotation regulating contact portion C ₁ and a rear rotation regulating contact portion The rear rotation of the temporal receiving member 60 and the occipital receiving member 50 is caused by the contact with C ₂ and the contact between the rear rotation restricting contact portion E ₁ and the rear rotation restricting contact portion E _2. Movement is regulated. In the state shown in FIG. 10D, the temporal receiving member 60 is in a used state (a state in which the occipital receiving member 50 projects forward from the front surface). The state shown in FIG. 10D is used, for example, when the headrest is used with the seat back tilted (reclining) and the temporal receiving member 60 is also desired to be used.

4. The headrest of the fourth embodiment Next, the headrest of the fourth embodiment will be described. FIG. 11 shows the headrest of the fourth embodiment when (a) the temporal receiving member 60 is in the rear position and (b) the temporal receiving member 60 is in the front position, as viewed diagonally from the upper left rear. It is a perspective view which showed the state. The headrest of the present invention can have a form as shown in FIG. 11, and the form can be varied. The headrest of the fourth embodiment corresponds to the above-mentioned "second basic type headrest" like the headrest of the second embodiment. The headrest of the fourth embodiment has a specific form such as a temporal receiving member 60 and an occipital receiving member 50, and a rotation angle of the temporal receiving member 60 (30 to 60 ° in the headrest of the fourth embodiment). It is the same as the headrest of the second embodiment except that the degree is set to be different. Therefore, a detailed description of the headrest of the fourth embodiment will be omitted.

4. Applications The headrests of the present invention, such as the headrests of the first to fourth embodiments described above, can be provided in various seats, and the applications are not particularly limited, but vehicles such as automobiles. It is suitable to be provided on the seat back of the seat.

10 Headrest stay 11 Vertical stay part (left side)
12 Vertical stay (right side)
13 Horizontal stay part 14 Spring fixing part 20 Guide plate 30 Rotating urging spring 50 Occipital region receiving member (occipital region receiving part)
51 Front part 52 Rear part 60 Side head receiving member 61 Left part 62 Right part 63 Frame-shaped part 64 Front part 65 Rear part 66 Stay insertion hole 70 Lock lever 71 Lower end of lock lever (lock part of lock lever)
72 Lock lever operation part 73 Spring fixing part 80 Lock urging spring 90 Stopper plate A ₁ Cam part A ₂ Cam part B ₁ Forward rotation regulation contact part B ₂ Forward rotation regulation contact part C ₁ Rear rotation regulation Contact part C ₂ Rear rotation regulation contact part D ₁ Forward rotation regulation contact part D ₂ Front rotation regulation contact part E ₁ Rear rotation regulation contact part E ₂ Rear rotation regulation contact part F ₁ Lock opening

Claims (4)

Fixed side member and
An adjustment side member that can be rotated and adjusted with respect to the fixed side member,
Consists of
The temporal receiving member for supporting the user's temporal region has a rear position in an unused state and a front position in a used state in which the temporal receiving member is rotated forward from the rear position.
Can rotate between
and,
A headrest with a structure that can lock the temporal receiving member in use.
The fixed side member is at least
A headrest stay that has a horizontal stay part and a pair of left and right vertical stay parts to form a gate shape,
A rotating urging spring that constantly urges the temporal receiving member backward,
It is supposed to be equipped with
One of the members constituting the fixed side member is provided with a lock opening, a cam portion A ₁ , a forward rotation restricting contact portion B _1, and a rear rotation restricting contact portion C _1, while the rear rotation restricting contact portion C ₁ is provided.
The adjustment side member is at least
A case-shaped temporal receiving member having a front rotation restricting contact portion B ₂ and a rear rotation restricting contact portion C ₂ rotatably supported in the front-rear direction with respect to the fixed side member.
Slidably supported against the side of the head receiving member, and a lock lever having a cam portion A _2,
A lock urging spring for constantly urging the lock lever to the lock side,
Is supposed to be equipped with
When the temporal receiving member is in the rear position, the rear rotation restricting contact portion C ₁ and the rear rotation restricting contact portion C ₂ come into contact with each other to restrict the rear rotation of the temporal receiving member, and While the forward rotation of the temporal receiving member is restricted by the urging force of the rotating urging spring, the temporal receiving member rotates forward when a forward force exceeding the urging force of the rotating urging spring is applied. It is said that it can be made
When the temporal receiving member rotates forward from the rear position to the front position, the cam portion A ₂ passes over the cam portion A ₁ while the lock lever resists the lock urging spring, and the lock lever becomes the lock opening. Fit and
When the temporal receiving member is in the forward position, that the forward rotation regulating contact portion B ₁ and the front rotation regulating contact portion B ₂ are in contact, and, combined lock lever fitted in the locking opening By doing so, the forward rotation and the backward rotation of the temporal receiving member are restricted, while by operating the lock lever to the unlock side, the lock lever is removed from the lock opening and the temporal region is released. A headrest characterized in that the receiving member can be moved to the rear position by the action of a rotating urging spring.
The occipital region receiving member is integrally provided with an occipital region receiving portion for supporting the occipital region of the user.
Metal guide plate with the locking opening and the cam portion A ₁ is, as a fixed-side member, is fixed to the headrest stay,
The headrest according to claim 1, wherein the vertical stay portion of the metal headrest stay functions as the front rotation regulation contact portion B ₁ and the rear rotation regulation contact portion C ₁ .
A case-shaped occipital region receiving member for supporting the occipital region of the user is fixed to the headrest stay as a fixed side member.
The headrest according to claim ₁ , wherein a lock opening, a cam portion A ₁ , a forward rotation restricting contact portion B ₁ and a rear rotation restricting contact portion C ₁ are provided on a back head receiving member.
Fixed side member and
An adjustment side member that can be rotated and adjusted with respect to the fixed side member,
Consists of
The temporal receiving member for supporting the temporal region of the user and the occipital receiving member for supporting the occipital region of the user are respectively.
Rear position and
The front position rotated forward from the rear position and
Can rotate between
and,
A headrest with a structure that can lock the temporal receiving member in use.
The fixed side member is at least
Horizontal stay part and has a pair of left and right vertical stays portion constitutes a portal, a headrest stay having a forward rotation regulating contact portion B ₁ and the rear rotation regulating contact portion C _1,
A stopper plate having a forward rotation restricting contact portion D ₁ and a rear rotation restricting contact portion E ₁
A rotating urging spring that constantly urges the occipital region receiving member forward,
It is supposed to be equipped with
The adjustment side member is at least
A case-shaped temporal receiving member having a front rotation restricting contact portion B ₂ and a rear rotation restricting contact portion C ₂ rotatably supported in the front-rear direction with respect to the fixed side member.
To support the occipital of the user, independently of the side head receiving member rotatably supported relative to the stationary member, the locking opening, the cam portion A _1, forward rotation regulating abutment A case-shaped occipital region receiving member having a portion D ₂ and a rearward rotation restricting contact portion E ₂
Slidably supported against the side of the head receiving member, and a lock lever having a cam portion A _2,
A lock urging spring for constantly urging the lock lever to the lock side,
Is supposed to be equipped with
When the temporal receiving the member is in the forward position or rear position, when the occipital receiving member is moving backwards once backward position from the forward position while the locking lever is Aragai the lock urging spring, cam portion A ₂ cam portion After passing A ₁ , the lock lever fits into the lock opening,
When the temporal receiving member is in the front position or the rear position and the occipital receiving member is in the rear position, the lock lever is fitted in the lock opening, so that the occipital receiving member can rotate forward and While backward rotation is restricted, by operating the lock lever to the unlock side, the lock lever is removed from the lock opening and the occipital region receiving member is moved to the forward position by the action of the rotation urging spring. As well as being able to
When both the temporal receiving member and the occipital receiving member are in the front position, the temporal receiving member is in an unused state, and the front rotation restricting contact portion B ₁ and the front rotation restricting contact portion B ₂ There it contacts, and, by a front rotation regulating contact portion D ₁ and the front rotation regulating contact portion D ₂ abuts, and the front pivot of the side head receiving member and occipital receiving member is restricted Moreover, while the backward rotation of the occipital region receiving member is restricted by the urging force of the rotating urging spring, the occipital region receiving member is rotated backward when a backward force exceeding the urging force of the rotating urging spring is applied. Is ready to go
When the temporal receiving member is in the front position and the occipital receiving member is in the rear position, the temporal receiving member is in the used state, and the front rotation restricting contact portion B ₁ and the front rotation restricting contact portion B are in use. _By contacting with ₂ , the forward rotation of the occipital region receiving member is restricted.
Side head receiving member is in the rear position, when the occipital receiving member is in the forward position, the side head receiving member is an unused state, the rear rotation regulating contact portion C ₁ and a rear rotation regulating contact portion When it comes into contact with C ₂ , the backward rotation of the temporal receiving member is restricted.
When both the temporal receiving member and the occipital receiving member are in the rear position, the temporal receiving member is in the used state, and the rear rotation restricting contact portion C ₁ and the rear rotation restricting contact portion C ₂ are in use. The rearward rotation of the temporal support member and the occipital region receiving member is restricted by the contact and the contact between the rear rotation regulation contact portion E ₁ and the rear rotation regulation contact portion E _2. The headrest is characterized by the fact that it has been made.

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