JPH04118057U - Head rest for car seats - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a headrest that is both easy to assemble a cover and prevents problems caused by expansion and contraction forces. [Structure] The bag-shaped cover 3 is closed by the hook means 4 so that it is disposed on the lower surface of the headrest main body 2 in a direction that connects the pair of stays 1, and the hook means 4 is connected to the opposite opening edges 31. First and second hook members 5a and 5b attached to one side edge, and an engagement piece 6a attached to the other side edge,
6b, and the sewn part of the cover sewn to the board piece of the hook member, and the first hook member 5a has a gap between the locking protrusion and the board part by the thickness of the sewn part. At the same time, the second hook member 5b is accommodated in the concave groove 512b, and the first hook member is arranged in the central region 321 of the closing part, and the second hook member is arranged in the both side regions 322 of the closing part. do.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a headrest for a car seat.

0002

[Conventional technology]

Traditionally, headrests for automobile seats have been made using synthetic resin bags as cushion bodies. covered with a shaped cover, and the openings of this cover are closed together with a hook member. (For example, see Japanese Utility Model Application Publication No. 1-143998). This head In the case of a dressrest cover, the closing part of the opening edge of the cover is connected to the headrest. This closing part is located on the lower surface of the opening in the direction that connects the pair of stays. By mutually engaging a pair of hook members attached to face each other. It is formed.

0003

[Problem that the idea aims to solve]

The conventional car seat headrests mentioned above are suitable for driving in cold regions in the middle of winter. Because it is used under a variety of conditions, from the scorching sun of midsummer to There is a risk that the bar will expand or contract, which will affect the hook member and cause problems. be. In other words, if the hook member stretches or contracts excessively, the stretching force will cause the hook member to may come off. Especially if the cover is made of genuine leather, Due to significant shrinkage, there is a high risk of problems occurring.

0004 In order to prevent such problems from occurring, the degree of protrusion of the hook's engagement protrusion should be adjusted. It may be possible to strengthen the locking force by increasing the It will be time consuming. Conversely, if the hook's engagement force is weakened, it will be easier to assemble. Although it becomes easier, the above-mentioned problems will be magnified.

[0005] This idea was made in view of these circumstances, and it This makes it possible to achieve both ease of operation and prevention of defects caused by elastic force. The purpose of this product is to provide a headrest for an automobile seat that is suitable for use in cars.

[0006]

[Means to solve the problem]

In order to achieve the above object, claim 1 provides a head made of a cushion body or the like. A rest body, a bag-shaped cover that covers the outer surface of this headrest body, and this headrest body. and a hook means for closing an opening edge of the cover, the cover having an opening edge close to the opening edge. It is placed so that it is closed on the bottom surface of the headrest body, and the closing part are arranged in a direction that connects the pair of stays, and the hook means is arranged in a direction that connects the pair of stays, and the hook means first and second hook members attached to one side edge; an engaging piece that is locked by a hook member, and the hook member is connected to a board piece. part, a folded piece part bent from the tip edge of this board piece part, and this folded part part. A tip of the piece is formed to protrude toward the substrate piece so as to engage with the edge of the engaging piece. and a locking protrusion, and the board piece is longer than the folded piece. , this board piece has an opening in the cover facing the gap between the locking protrusion and the board piece. The edge is sewn, and this sewn portion is similar to the sewn portion in the first hook member. The second hook member is arranged such that the gap is narrowed by the thickness of the second hook member. A concave groove is formed in the substrate piece on the side where the gap is formed, and the above-mentioned groove is formed in this concave groove. The sewing part is arranged to be accommodated, and the first hook member is arranged to close the cover. The second hook member is disposed in a central region of the stop portion, and the second hook member is disposed in both side regions of the closure portion. It was configured as shown.

[0007] Further, in claim 2, the first hook member is thicker than the second hook member. The first hook member is configured to form the first hook member as follows.

[0008]

[Effect]

According to claim 1, the central region of the closing portion is engaged with the first hook member. The insertion gap for the piece is narrowed by the thickness of the sewn part of the cover, so It is difficult to slip out, and in the second hook member, the sewn portion is accommodated in the concave groove. Therefore, it does not become narrow as described above, and the engagement piece can be easily inserted.

[0009] According to the second aspect, in addition to the effect according to the first aspect, the first hook member Since the plate thickness of the second hook member is larger than that of the second hook member, the engagement piece is unlatched accordingly. Strongly resists force.

0010

【Example】

In FIG. 1, a pair of car seat headrests H are mounted on a frame (not shown). The upper end of stay 1 is fixed, and a cushion is assembled around this frame. The headrest main body 2 is formed by the body 21, and the outer surface of this headrest main body 2 is covered with a cover 3.

[0011] The cover 3 is made of the same material as the seat skin, such as synthetic resin, and is shaped like a bag. The headrest main body 2 is covered from above as shown in FIGS. 1 and 2. As a result, the opening edge 31 is closed by the lower surface of the headrest main body 2. It is arranged so that This closing part 32 is closed by hook means 4 as shown in FIG. By closing the opening edge 31, the pair of stems are closed as shown in FIG. It is formed in a straight line in the direction connecting -1. The hook means 4 is shown in FIGS. 3 and 4. A hook sewn to one side of the opposing opening edges 31a and 31b as shown in It is sewn to the members 5a, 5b and the other and is locked to the hook members 5a, 5b. It is composed of band-shaped synthetic resin engaging pieces 6a and 6b.

0012 The hook members 5a and 5b have board pieces 51a and 51b, and board pieces 51 a, 51b are bent so as to face the board pieces 51a, 51b from their leading edges. The folded pieces 52a, 52b and the ends of the folded pieces 52a, 52b The board piece portions are arranged such that the ends engage with the edges 61a, 61b of the engaging pieces 6a, 6b. It is composed of locking protrusions 53a and 53b protrudingly formed on the 51a and 51b sides. It is.

[0013] The board pieces 51a and 51b are longer than the folded pieces 52a and 52b. Between the board pieces 51a, 51b and the locking protrusions 53a, 53b, Gaps 54a and 54b are formed for insertion of the engagement pieces 6a and 6b. This gap At the base end portions 511a, 511b of the board piece portions 51a, 51b facing the gaps 54a, 54b, are concave grooves 512a, 512 for sewing the opening edges 31a of the covers 6a, 6b. b is formed.

[0014] In the first hook member 5a, the groove 512a is formed by folding the base end 511a. It is formed on the surface (outer surface) opposite to the piece 52a, and the second hook member 5b has an upper The groove 512b is formed on the surface (inner surface) on the same side as the folded piece 52b. Then, the folded edge 311 of the opening edge 31a is inside the board pieces 51a, 51b. A sewing thread that is arranged on the surface side and whose end edge 311 passes through the grooves 512a and 512b. 71 and is sewn and fixed. Therefore, in the first hook member 5a, , the sewn portion 311a of the opening edge 31a protrudes toward the gap 54a by the thickness thereof. , in the second hook member 5b, the sewn portion 311a is accommodated in the groove 512b. so that it does not protrude toward the gap 54b. Note that the first hook member The groove 512a in 5a has the role of indicating the sewing position of the opening edge 31a. is fulfilled.

[0015] Further, in the first hook member 5a, the gap 54a is the gap in the second hook member 5b. The gap 54a is narrower than the gap 54b, that is, the gap 54a is narrower than the engagement piece 6a and The gap 5 is approximately the same as the total thickness of the opening edge 31b. 4b is designed to be considerably larger than the total thickness of the engaging piece 6b and the opening edge 31b. has been established. The width of the gaps 54a and 54b is set in the first hook member 5a. , bend the folded piece 52a so that it approaches the board piece 51a toward the distal end, and The amount of protrusion of the stop projection 53a is set to be larger than that of the second hook member 5b. In addition, in the second hook member 5b, the folded piece part 52b is attached to the board piece part 51. This is done by arranging them parallel to each other and separated from them by a predetermined amount.

[0016] Further, the first hook member 5a is thicker than the second hook member 5b. It is well formed. That is, the second hook member 5b has a relative temperature difference of 100°C, for example. The thickness of the first hook member 5a is determined so as to withstand the expansion and contraction force of the first hook member 5a. For example, the thickness of the plate is determined so that it can withstand the expansion and contraction force of a relative temperature difference of 110°C. There is.

[0017] Hook means constituted by a combination of the first hook member 5a and the engagement piece 6a 4 is a central region sandwiched between a pair of stays 1 of the closing part 32 as shown in FIG. 321, and is configured by a combination of the second hook member 5b and the engagement piece 6b. The hook means 4 is attached to both sides of the closing part 32 on the outside of the pair of stays 1. It is arranged in the partial area 322. Note that 323 in FIG. 2 is a stay in the closing part 32. 1 shows the accommodation hole as the cover 3 of No. 1 expands and contracts.

[0018] In the above configuration, to assemble the headrest H, attach the headrest body 2 to the headrest body 2. Cover the cover 3 from above, and close the opening edge 31 to the bottom of the headrest body 2. It can be closed by locking means 4. This closing operation is performed at the second side area 322. The engagement piece 6b is attached to the hook member 5b with a gap 54b as shown by a dashed line and a solid line in FIG. the end edge 61b is engaged with the locking protrusion 53b, and the center area In area 321, the engaging piece 6a is attached to the first hook member 5a as shown in FIG. 3 by a dashed line and a solid line. Push the edge 61a into the locking protrusion 53 through the gap 54a slightly. This is done by engaging and assembling a. During this closing work, the gap 54b With the second hook member 5b having a large width, it is easy to perform operations such as inserting the engaging piece 6b. On the other hand, in the first hook member 5a, the gap 54a is almost the same as that of the engagement piece 6a etc. Since the sewing part 311a protrudes into the gap 54a, the work is This is difficult to do compared to the case of the second hook member 5b.

[0019] When an elastic force is applied to the cover 3 of the headrest H, the headrest H Since the outer circumferential length of the central part of the cover 3 is the largest, that part of the cover 3 also expands the most. The greatest stretching force acts on the central region 321. However, this central part When the area 321 is closed by the first hook member 5a and the engagement piece 6a, the sewing part 3 11a protrudes in a direction that narrows the gap 54a, making it difficult for the engagement piece 6a to be pulled out. Injuries are prevented and the edge 61a is reliably maintained in a locked state with the locking protrusion 53a. Moreover, the contracting force from the opening edge 31b causes the engagement piece 6a to be twisted and folded back. Even if a bending force is applied to the portion 52a in the direction of increasing the gap 54a, the thickness of the plate is Since the gap 54a is formed to be thick, the width of the gap 54a is constant in order to resist the bending force. is maintained.

[0020] In this way, in the headrest H of this embodiment, the central region of the closing part 32 321, the work of assembling the hook means 4 is more labor-intensive compared to the both side regions 322. However, it effectively resists the largest stretching force and secures the cover 3 in the closed state. You can actually keep it. On the other hand, in the both side regions 322, the width of the gap 54b is Since the engagement piece 6b is large, it is easy to pull out the engagement piece 6b due to the elastic force, but on the other hand, the assembly work is difficult. It can be done easily. In this case, the second foot at both side regions 322 Even if the engagement between the locking member 5b and the engagement piece 6b becomes disengaged, the central region 321 remains closed. By keeping the headrest H in the closed state, the cover 3 of the headrest H is kept in the closed state. I can do it. Therefore, the maintenance of the closed state required for the headrest H It is possible to achieve both performance and improved workability during assembly.

[0021] Note that other aspects of the above embodiment are shown below.

[0022] stomach. In the above embodiment, the difference in width between the gaps 54a and 54b is determined by the difference between the widths of the grooves 512a and 512. In addition to the difference in the formation position of b, there are also differences in the arrangement of the folding piece 52a and the locking protrusion 53. Although it is formed by the amount of protrusion of a, it is not limited to this, for example, it is formed by the amount of protrusion of the hook member itself. The first and second shapes are set to be the same, and the difference is only due to the difference in the formation position of the grooves. Therefore, the above-mentioned gap difference may be formed. In this case as well, the difference in the gap This strengthens the holding force in the closed state in the central area and improves assembly workability in both side areas. You can measure the above.

[0023] B. In the above embodiment, the first hook member 5a and the engagement piece 6 are provided along the entire length of the central region. a, a second hook member 5b and an engaging piece 6b are provided in both side regions; For example, it may be provided in a part of the central area or a part of both side areas. may be configured.

[0024]

[Effect of the idea]

As explained above, the headrest for a car seat according to claim 1 of this invention If so, it will be possible to maintain a strong closed state in the central region where the stretching force is relatively strong. This makes it possible to reliably prevent problems caused by expansion and contraction forces, and also to Closing work can be easily done in the areas on both sides where the elastic force is relatively weak, and the headless The performance of maintaining the closed state required in the process, and the improvement of workability during assembly. It is possible to achieve both.

[0025] According to claim 2, in addition to the effects of claim 1, the first hook portion Since the material is thicker than the second hook member, it prevents the engagement piece from coming off. The closed state can be maintained more reliably. Ru.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of this invention.

FIG. 2 is a perspective view of the headrest of FIG. 1 looking up from below.

FIG. 3 is an enlarged cross-sectional explanatory view of a state in which an engaging piece is engaged with a first hook member.

FIG. 4 is an enlarged cross-sectional explanatory view of a state in which an engagement piece is engaged with a second hook member.

[Explanation of symbols]

1 stay 2 Headrest body 3 Cover 4 Hook means 5a First hook member 5b Second hook member 6a, 6b engaging piece 21 Cushion body 31, 31a, 31b opening edge 32 Closing part 51a, 51b board piece part 52a, 52b folded pieces 53a, 53b locking protrusion 54a, 54b gap 321 Central area 322 Both side areas 512b Groove

Claims (2)

[Scope of utility model registration request] Claim 1: A headrest body comprising a cushion body or the like, a bag-shaped cover covering the outer surface of the headrest body, and hook means for closing an opening edge of the cover, the cover having a hook means for closing an opening edge of the cover. is placed so as to be closed on the lower surface of the headrest body, and
The closing portion is arranged in a direction that connects the pair of stays, and the hook means includes first and second hook members attached to one side edge of the opposing opening edge, and attached to the other side edge of the opening edge. The hook member is composed of a board piece part, a folded piece part bent from the tip edge of the board piece part, and the above-mentioned engagement piece at the tip of the folded piece part. It is comprised of a locking protrusion formed protrudingly on the board piece side so as to engage with the edge of the joining piece, the board piece part is formed longer than the folded piece part, and the board piece part has the above-mentioned locking protrusion. The opening edge of the cover is sewn facing the gap between the locking protrusion and the board piece, and this sewn portion narrows the gap by the thickness of the sewn portion in the first hook member. The second hook member has a concave groove formed in the substrate piece on the side where the gap is formed, and is arranged so that the sewing part is accommodated in the concave groove, and A headrest for an automobile seat, characterized in that one hook member is disposed in a central region of the closing portion of the cover, and the second hook members are disposed in both side regions of the closing portion. 2. The headrest for an automobile seat according to claim 1, wherein the first hook member is formed so that the first hook member is thicker than the second hook member.