Seat belt device

Abstract

To provide a seat belt device capable of realizing a tongue stopper function with a simple configuration.SOLUTION: A seat belt device includes: a webbing; and a tongue which is provided with an insertion hole through which the webbing is inserted, and in which movement of the webbing along a longitudinal direction is restricted by contact with a folded-back portion of the webbing.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to a seat belt apparatus. [Background technology]

[0002] A seat belt device is known that includes a webbing having both ends fixed to a vehicle, a tongue provided on the webbing so as to be movable along the longitudinal direction of the webbing, and a tongue stopper provided on the webbing to restrict movement of the tongue (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-237289 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, since the conventional tongue stopper is formed as a separate member from the webbing, the structure for realizing the function of the tongue stopper is complicated.

[0005] The present disclosure provides a seat belt device that can achieve the function of a tongue stopper with a simple configuration. [Means for solving the problem]

[0006] The seat belt device according to the first aspect comprises: Webbing and a tongue having an insertion hole through which the webbing is inserted and whose movement along the longitudinal direction of the webbing is restricted by contact with a folded-back portion of the webbing.

[0007] A second aspect is the seat belt device of the first aspect, The longitudinal direction includes a first direction along the longitudinal direction and a second direction opposite to the first direction, The folding includes a first folding portion from the first direction to the second direction and a second folding portion from the second direction to the first direction, The movement of the tongue in the first direction is restricted by contact with the second folded portion.

[0008] A third aspect is the seat belt device of the second aspect, the second folded portion includes a first portion after being folded in the first direction, The first folded portion is joined to the first portion.

[0009] A fourth aspect is the seat belt device of the third aspect, the first folded portion includes a first folded end portion extending from the first direction to the second direction, The first folded end is joined to the first portion.

[0010] A fifth aspect is the seat belt device of the third aspect, the first folded portion includes a second portion before being folded in the second direction, The second folded portion is joined to the second portion.

[0011] A sixth aspect is the seat belt device of the fifth aspect, The second folded portion includes a second folded end portion from the second direction to the first direction, and a base portion in which a portion before being folded in the first direction and a portion after being folded in the first direction are overlapped with each other, the second folded end is spaced from the second portion, The root portion is joined to the second portion.

[0012] A seventh aspect is the seat belt device of the fifth aspect, the second folded portion includes a second folded end portion extending from the second direction to the first direction, The second folded end is joined to the second portion.

[0013] An eighth aspect is a seat belt device according to any one of the second to seventh aspects, The tongue has a base in which the insertion hole is provided and a plate protruding from the base, The second folded-back portion is located on the opposite side of the webbing to the side facing the plate.

[0014] A ninth aspect is the seat belt device of the eighth aspect, The movement of the tongue along the longitudinal direction is restricted by contact between the second folded portion and the base.

[0015] A tenth aspect is a seat belt device according to any one of the second to seventh aspects, The tongue has a base in which the insertion hole is provided and a plate protruding from the base, The second folded-back portion is located on the same side of the webbing as the side facing the plate.

[0016] An eleventh aspect is the seat belt device of the tenth aspect, The movement of the tongue along the longitudinal direction is restricted by contact between the second folded portion and the plate or the base. Effect of the Invention

[0017] According to the present disclosure, it is possible to provide a seat belt device that can achieve the function of a tongue stopper with a simple configuration. [Brief description of the drawings]

[0018] [Figure 1] 1 is a diagram showing an example of a configuration of a seat belt device according to a first embodiment. [Diagram 2] FIG. 2 is a diagram showing a seat belt device of the first embodiment in a non-fastened state of a seat belt. [Diagram 3]4 is an enlarged front view of a location where a tongue is attached to a webbing in the webbing device of the first embodiment. FIG. [Figure 4] 4 is an enlarged side view of a location where a tongue is attached to a webbing in the webbing device of the first embodiment. FIG. [Diagram 5] FIG. 11 is an enlarged side view of a location where a tongue is attached to a webbing in a modified example of the webbing device of the first embodiment. [Figure 6] 13 is an enlarged front view of a location where a tongue is attached to a webbing in a webbing device according to a second embodiment. FIG. [Figure 7] 13 is an enlarged side view of a location where a tongue is attached to a webbing in a webbing device of a second embodiment. FIG. [Figure 8] 13 is an enlarged side view of a location where a tongue is attached to a webbing in a modified example of the webbing device of the second embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] An embodiment will be described below.

[0020] 1 is a diagram showing an example of a seat belt device according to an embodiment. The seat belt device 1 is mounted on a vehicle. The seat belt device 1 includes, for example, a webbing 4, a retractor 3, a shoulder anchor 6, a tongue 7, and a buckle 8.

[0021] The webbing 4 is a belt that restrains an occupant sitting in a vehicle seat 2, and is a belt-shaped member that is retracted and pulled out by a retractor 3. The webbing is also called a seat belt. A belt anchor 5 at the tip of the webbing 4 is fixed to the seat 2 or to a vehicle body in the vicinity of the seat 2.

[0022] The retractor 3 is an example of a winding device that enables winding or unwinding of the webbing 4, and when deceleration equal to or greater than a predetermined value is applied to the vehicle, such as during a vehicle collision, the retractor 3 restricts the webbing 4 from being unwound from the retractor 3. The retractor 3 is fixed to the seat 2 or to a vehicle body in the vicinity of the seat 2. The retractor 3 may be provided with an energy absorbing mechanism that, when deceleration equal to or greater than a predetermined value is applied to the vehicle, such as during a vehicle collision, restricts the unwounding of the webbing 4 from the retractor 3 and then gradually unwinds the webbing 4 to absorb the impact applied to the occupant.

[0023] The shoulder anchor 6 is an example of a belt insertion tool through which the webbing 4 is inserted, and is a member that guides the webbing 4 pulled out from the retractor 3 toward the shoulder of the occupant. The shoulder anchor 6 is fixed to the seat 2 or to a vehicle body in the vicinity of the seat 2.

[0024] The tongue 7 is an example of a belt insertion tool through which the webbing 4 is inserted, and is a component slidably attached to the webbing 4 guided by the shoulder anchor 6.

[0025] The buckle 8 is a component to which the tongue 7 is detachably connected, and is fixed to the seat 2 or a vehicle body in the vicinity of the seat 2, for example.

[0026] With the tongue 7 connected to the buckle 8, the portion of the webbing 4 between the shoulder anchor 6 and the tongue 7 forms a shoulder belt portion 9 that restrains the chest and shoulders of the occupant. With the tongue 7 connected to the buckle 8, the portion of the webbing 4 between the belt anchor 5 and the tongue 7 forms a lap belt portion 10 that restrains the waist of the occupant.

[0027] 1, when the webbing 4 is to be worn by an occupant, the webbing 4 is pulled out from the retractor 3. Then, the tongue 7 is connected to the buckle 8, and the webbing 4 is wound up by the retractor 3 so that the slack in the webbing 4 is reduced, whereby the webbing 4 is worn by the occupant.

[0028] In a state in which the tongue 7 is connected to the buckle 8 and the webbing 4 is worn by an occupant, the webbing 4 can be freely withdrawn at a normal withdrawing speed in normal times when the vehicle is not subjected to deceleration of a predetermined value or more during a vehicle collision, etc. Then, when the pulling force in the withdrawing direction of the webbing 4 is released, the excess amount of the webbing 4 that is withdrawn is wound up by the retractor 3.

[0029] With the tongue 7 connected to the buckle 8 and the webbing 4 attached to the occupant, in an emergency in which the vehicle is subjected to deceleration of a predetermined value or more, such as during a vehicle collision, the retractor 3 strengthens the restraining force of the webbing 4 on the occupant by locking or winding up the webbing 4 so as to restrict the webbing 4 from being pulled out of the retractor 3.

[0030] 2 is a diagram showing a seat belt in an unfastened state. In the unfastened state where the seat belt (webbing 4) is not fastened by an occupant, the tongue 7 is not connected to the buckle 8, and the entire amount of the webbing 4 (specifically, the amount of the webbing 4 that the retractor 3 can take up without any hindrance) is wound up by the retractor 3.

[0031] When the webbing 4 is not fastened, the webbing 4 is disposed from above to below the trim 11 that covers the pillar of the vehicle body, along the trim 11. If the tongue 7 falls downward along the webbing 4 in this state, it becomes troublesome for the occupant to grab the tongue 7 and connect it to the buckle 8.

[0032] To facilitate this action, the webbing 4 has a fold 40 formed by folding back its middle portion. The fold 40 restricts movement of the tongue 7 so that the tongue 7 does not fall below a predetermined position (for example, a portion near the shoulder between the shoulder anchor 6 and the belt anchor 5) when the webbing 4 is arranged along the trim 11. In this manner, the fold 40 functions as a tongue stopper that restricts the tongue 7 from moving toward the belt anchor 5 beyond a predetermined position on the webbing 4. Since the fold 40 restricts the downward movement of the tongue 7, the occupant can easily grasp the tongue 7 near his or her shoulder and connect it to the buckle 8 when fastening the seat belt (webbing 4).

[0033] 3 is an enlarged front view of a location where the tongue is attached to the webbing in the seatbelt device of the first embodiment. The X-direction, the Y-direction, and the Z-direction are perpendicular to each other. The X-direction corresponds to the longitudinal direction of the webbing 4 and is parallel to the direction in which the plate 72 of the tongue 7 protrudes from the base 71. The positive X-direction is an example of a first direction along the longitudinal direction of the webbing. The negative X-direction is an example of a second direction opposite to the first direction. The Y-direction corresponds to the width direction of the webbing 4 and is parallel to the longitudinal direction of the insertion hole 70 provided in the base 71 of the tongue 7. The Z-direction corresponds to a direction perpendicular to the main surface 48 of the webbing 4 or the plate surface 73 of the plate 72.

[0034] The tongue 7 is provided with an insertion hole 70 through which the webbing 4 is inserted. The tongue 7 is attached so as to be movable relative to the webbing 4 along the longitudinal direction of the webbing 4 by inserting the webbing 4 through the insertion hole 70. The tongue 7 has a base 71 in which the insertion hole 70 is provided, and a metal plate 72 protruding from the base 71 in the positive X direction. The base 71 covers a part of the plate 72. The base 71 is a part in which the periphery of an opening (insertion hole 70) formed in the plate 72 is molded with resin or the like so as to form the insertion hole 70 whose longitudinal direction is the Y direction.

[0035] 4 is an enlarged side view of a location where the tongue is attached to the webbing in the seat belt device of the first embodiment. In an unfastened state of the webbing 4, the webbing 4 has a main surface 48 facing the positive Z direction and a main surface 49 facing the negative Z direction. In an unfastened state of the webbing 4, the plate 72 of the tongue 7 has a plate surface 74 facing the main surface 48 and facing the negative Z direction, and a plate surface 73 facing the positive Z direction.

[0036] The webbing 4 is folded back at its middle portion to form a fold 40. The movement of the tongue 7 in the positive X direction along the longitudinal direction of the webbing 4 is restricted by contact with the fold 40. The movement of the tongue 7 in the positive X direction relative to the webbing 4 is restricted by contact with the fold 40.

[0037] According to the seatbelt device 1 of the first embodiment, the fold-back 40 is configured as a part of the webbing 4 (and is not configured as a separate member from the webbing 4), and therefore the function of the tongue stopper can be achieved with a simple configuration.

[0038] The fold 40 is a portion from a first folded end 44 from the positive X direction to the negative X direction to a second folded end 46 from the negative X direction to the positive X direction. The fold 40 includes a first folded portion 41 from the positive X direction to the negative X direction and a second folded portion 42 from the negative X direction to the positive X direction. The first folded portion 41 is a portion folded back at the first folded end 44 with a main surface 49 facing inward from the positive X direction to the negative X direction. The second folded portion 42 is a portion folded back at the second folded end 46 with a main surface 48 facing inward from the negative X direction to the positive X direction.

[0039] The second folded-back portion 42 is located on the opposite side (main surface 49 side) of the webbing 4 from the side (main surface 48 side) where the plate 72 faces. As a result, the second folded-back portion 42 reduces interference between the base 71 of the tongue 7 and the trim 11 present on the negative Z direction side of the second folded-back portion 42, making it difficult for the trim 11 to be scratched.

[0040] When the tongue 7 moves in the positive X direction along the longitudinal direction of the webbing 4 inserted through the insertion hole 70, the tongue 7 comes into contact with an outer surface (upper surface) facing the negative X direction side of the second folded-back portion 42. Movement of the tongue 7 in the positive X direction is restricted by contact between the base 71 and the outer surface of the second folded-back portion 42.

[0041] The second folded portion 42 includes a first portion 43 after being folded in the positive X-direction. The first portion 43 is a flat portion extending from the base portion 50 in the positive X-direction. The first folded portion 41 is joined to the first portion 43. This prevents the first folded portion 41 from rising up from the first portion 43 in the positive Z-direction, thereby reducing interference between the first folded portion 41 and surrounding objects such as the sheet 2. Examples of joining methods include sewing, bonding, fastening, and welding.

[0042] In the seat belt device 1, the first folded end 44 of the first folded portion 41 is joined to the first portion 43. This prevents the first folded end 44 from rising up from the first portion 43 in the positive Z direction, thereby reducing interference between the first folded end 44 and surrounding objects such as the seat 2. This also reduces the intrusion of foreign matter such as dust into a gap between the first portion 43 and the first folded end 44. Examples of joining methods include sewing, bonding, fastening, and welding.

[0043] The second folded portion 42 includes a root portion 50 in which a portion before folding in the positive X direction and a portion after folding in the positive X direction are overlapped. On the other hand, the first folded portion 41 includes a second portion 45 before folding in the negative X direction. The second portion 45 is a flat portion extending in the positive X direction to the first folded end portion 44. The second folded end portion 46 is separated from the second portion 45 in the negative Z direction, and the root portion 50 is joined to the second portion 45. This suppresses the root portion 50 from rising in the negative Z direction from the second portion 45, and allows the second folded end portion 46 to rise in the negative Z direction from the second portion 45. Examples of joining methods include sewing, bonding, fastening, and welding.

[0044] By allowing the second folded end 46 to rise in the negative Z direction from the second portion 45, the base 71 is received in the gap that is generated between the second portion 45 and the second folded end 46, thereby suppressing movement of the tongue 7 in the positive X direction.

[0045] The second folded portion 42 is folded back in an annular shape so as to form an opening 47 penetrating in the Y direction, thereby sandwiching the tongue 7 between the webbing 4. The formation of the opening 47 allows the second folded portion 42 to bend. The bending of the second folded portion 42 reduces interference between the second folded portion 42 and the base 71, making the second folded portion 42 and the base 71 less likely to be damaged. The bending of the second folded portion 42 reduces interference between the second folded portion 42 and the trim 11, making the second folded portion 42 and the trim 11 less likely to be damaged.

[0046] The second folded portion 42 may be folded back flat so that no opening 47 penetrating in the Y direction is formed, as in a seat belt device 1A shown in Fig. 5. In Fig. 5, the flat second folded portion 42 from the first folded end 44 to the second folded end 46 is joined to the second region 45. This prevents the second folded portion 42 from rising up in the negative Z direction from the second region 45, thereby reducing interference between the second folded portion 42 and surrounding objects such as the trim 11. Examples of joining methods include sewing, bonding, fastening, and welding.

[0047] In the seat belt device 1A, the second folded end 46 is joined to the second portion 45. This suppresses the second folded end 46 from rising in the negative Z direction from the second portion 45, thereby reducing interference between the second folded end 46 and surrounding objects such as the trim 11. This also reduces the intrusion of foreign matter such as dust into the gap between the second portion 45 and the second folded end 46. Examples of joining methods include sewing, bonding, fastening, and welding.

[0048] When the tongue 7 moves in the positive X direction along the longitudinal direction of the webbing 4 inserted through the insertion hole 70, the tongue 7 comes into contact with the second folded end 46 of the second folded portion 42. The movement of the tongue 7 in the positive X direction is restricted by the contact between the base 71 and the second folded end 46.

[0049] 6 is an enlarged front view of a portion where the tongue is attached to the webbing in the seat belt device of the second embodiment. In the second embodiment, the description of the configuration, operation, and effect similar to those of the first embodiment will be omitted by citing the above description.

[0050] FIG. 7 is an enlarged side view of a location where a tongue is attached to a webbing in a seatbelt device of a second embodiment.

[0051] The webbing 4 is folded back at its middle portion to form a fold 140. The movement of the tongue 7 in the positive X direction along the longitudinal direction of the webbing 4 is restricted by contact with the fold 140. The movement of the tongue 7 in the positive X direction relative to the webbing 4 is restricted by contact of the tongue 7 with the fold 140.

[0052] According to the seatbelt device 101 of the second embodiment, the fold-back 140 is configured as a part of the webbing 4 (and is not configured as a separate member from the webbing 4), and therefore the function of the tongue stopper can be achieved with a simple configuration.

[0053] The fold 140 is a portion from a first folded end 144 from the positive X direction to the negative X direction to a second folded end 146 from the negative X direction to the positive X direction. The fold 140 includes a first folded portion 141 from the positive X direction to the negative X direction and a second folded portion 142 from the negative X direction to the positive X direction. The first folded portion 141 is a portion folded back at the first folded end 144 from the positive X direction to the negative X direction with the main surface 48 facing inward. The second folded portion 142 is a portion folded back at the second folded end 146 from the negative X direction to the positive X direction with the main surface 49 facing inward.

[0054] The second folded-back portion 142 is located on the same side (main surface 48 side) of the webbing 4 as the side facing the plate 72. As a result, the second folded-back portion 142 reduces interference between the plate 72 of the tongue 7 and the seat 2 present on the positive Z direction side of the second folded-back portion 142, making it difficult for the seat 2 to be scratched. In addition, the second folded-back portion 142 reduces interference between the plate 72 of the tongue 7 and an occupant present on the positive Z direction side of the second folded-back portion 142, making it difficult for the plate 72 to come into contact with the occupant. As a result, for example, it is possible to reduce the possibility that the plate 72, which has become hot due to an increase in temperature, etc., will come into contact with the occupant when getting on or off the vehicle or when sitting down.

[0055] When the tongue 7 moves in the positive X direction along the longitudinal direction of the webbing 4 inserted through the insertion hole 70, the tongue 7 comes into contact with an outer surface (upper surface) facing the negative X direction side of the second folded-back portion 142. Movement of the tongue 7 in the positive X direction is restricted by contact between the plate 72 or the base 71 and the outer surface of the second folded-back portion 142.

[0056] The second folded portion 142 includes a first portion 143 after being folded in the positive X-direction. The first portion 143 is a flat portion extending in the positive X-direction from the base portion 150. The first folded portion 141 is joined to the first portion 143. This prevents the first folded portion 141 from rising up in the negative Z-direction from the first portion 143, thereby reducing interference between the first folded portion 141 and surrounding objects such as the trim 11. Examples of joining methods include sewing, bonding, fastening, and welding.

[0057] In the seat belt device 101, the first folded end 144 of the first folded portion 141 is joined to the first part 143. This suppresses the first folded end 144 from rising in the negative Z direction from the first part 143, thereby reducing interference between the first folded end 144 and surrounding objects such as the trim 11. This also reduces the intrusion of foreign matter such as dust into a gap generated between the first part 143 and the first folded end 144. Examples of joining methods include sewing, bonding, fastening, and welding.

[0058] The second folded portion 142 includes a root portion 150 in which a portion before folding in the positive X direction and a portion after folding in the positive X direction are overlapped. On the other hand, the first folded portion 141 includes a second portion 145 before folding in the negative X direction. The second portion 145 is a flat portion extending in the positive X direction to the first folded end portion 144. The second folded end portion 146 is separated from the second portion 145 in the positive Z direction, and the root portion 150 is joined to the second portion 145. This suppresses the root portion 150 from rising in the positive Z direction from the second portion 145, and allows the second folded end portion 146 to rise in the positive Z direction from the second portion 145. Examples of joining methods include sewing, bonding, fastening, and welding.

[0059] By allowing the second folded end 146 to rise in the positive Z direction from the second portion 145, the plate 72 or the base 71 is received in the gap created between the second portion 145 and the second folded end 146, thereby suppressing movement of the tongue 7 in the positive X direction.

[0060] The second folded portion 142 is folded back in an annular shape so as to form an opening 147 penetrating in the Y direction, thereby sandwiching the tongue 7 between the webbing 4. The formation of the opening 147 allows the second folded portion 142 to bend. The bending of the second folded portion 142 reduces interference between the second folded portion 142 and the plate 72, making the second folded portion 142 and the plate 72 less likely to be damaged. The bending of the second folded portion 142 reduces interference between the second folded portion 142 and the sheet 2, making the second folded portion 142 and the sheet 2 less likely to be damaged.

[0061] The second folded-back portion 142 may be folded back flat so that no opening 147 penetrating in the Y direction is formed, as in a seat belt device 101A shown in Fig. 8. In Fig. 8, the flat second folded-back portion 142 from the first folded-back end 144 to the second folded-back end 146 is joined to the second region 145. This prevents the second folded-back portion 142 from rising up in the positive Z direction from the second region 145, thereby reducing interference between the second folded-back portion 142 and surrounding objects such as the seat 2. Examples of joining methods include sewing, bonding, fastening, and welding.

[0062] In the seat belt device 101A, the second folded end 146 is joined to the second portion 145. This suppresses the second folded end 146 from rising in the positive Z direction from the second portion 145, thereby reducing interference between the second folded end 146 and surrounding objects such as the seat 2. This also reduces the intrusion of foreign matter such as dust into a gap generated between the second portion 145 and the second folded end 146. Examples of joining methods include sewing, bonding, fastening, and welding.

[0063] As described above, the embodiment has been described, but the above embodiment is presented as an example, and the present invention is not limited to the above embodiment. The above embodiment can be implemented in various other forms, and various combinations, omissions, substitutions, modifications, etc. can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims.

[0064] For example, the seat 2 may be a front seat or a rear seat of the vehicle. [Explanation of symbols]

[0065] 1,1A,101,101A Seat belt device 2 seats 3 Retractor 4. Webbing 5 Belt anchor 6 Shoulder Anchor 7 Tongue 8 Buckle 9 Shoulder belt section 10 Lap belt section 11 Trim 40,140 Turnaround 41,141 First turn-up part 42,142 Second fold 43,143 Part 1 44,144 First folded end 45,145 2nd part 46,146 Second folded end 47,147 aperture 48,49 Main surface 50,150 Base 70 Insertion hole 71 Base 72 Plate

Claims

1. Webbing and a tongue having an insertion hole through which the webbing is inserted, the movement of the webbing along the longitudinal direction being restricted by contact with a folded-over portion of the webbing.

2. The longitudinal direction includes a first direction along the longitudinal direction and a second direction opposite to the first direction, The folding includes a first folding portion from the first direction to the second direction and a second folding portion from the second direction to the first direction, The seat belt device according to claim 1 , wherein movement of the tongue in the first direction is restricted by contact with the second folded-back portion.

3. The second folded portion includes a first portion after being folded in the first direction, The seat belt device according to claim 2 , wherein the first folded-back portion is joined to the first region.

4. The first folded portion includes a first folded end portion extending from the first direction to the second direction, The seat belt device according to claim 3 , wherein the first folded end is joined to the first portion.

5. the first folded portion includes a second portion before being folded in the second direction, The seat belt device according to claim 3 , wherein the second folded-back portion is joined to the second region.

6. the second folded portion includes a second folded end portion from the second direction to the first direction, and a base portion in which a portion before being folded in the first direction and a portion after being folded in the first direction are overlapped with each other, the second folded end is spaced from the second portion, The seat belt device according to claim 5 , wherein the root portion is joined to the second portion.

7. The second folded portion includes a second folded end portion extending from the second direction to the first direction, The seat belt device according to claim 5 , wherein the second folded end is joined to the second portion.

8. The tongue has a base in which the insertion hole is provided and a plate protruding from the base, The seat belt device according to claim 2 , wherein the second folded-back portion is located on a side of the webbing opposite to a side facing the plate.

9. The seat belt device according to claim 8 , wherein movement of the tongue along the longitudinal direction is restricted by contact between the second folded-back portion and the base.

10. The tongue has a base in which the insertion hole is provided and a plate protruding from the base, The seat belt device according to claim 2 , wherein the second folded-back portion is located on the same side of the webbing as the side facing the plate.

11. The seat belt device according to claim 10, wherein movement of the tongue along the longitudinal direction is restricted by contact between the second folded-back portion and the plate or the base.

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