Seat headrest fool-proof structure, seat headrest, seat backrest and seat

Abstract

The utility model provides a seat headrest fool-proof structure, a seat headrest, a seat backrest and a seat. The seat headrest fool-proof structure comprises a clamping groove and at least one headrest rod arranged on the seat headrest, the clamping groove is located in the headrest rod, and the clamping groove is located in a preset opening position; the elastic blocking piece is arranged on a headrest guide sleeve, the headrest guide sleeve corresponds to a headrest rod of the seat headrest, and the elastic blocking piece located on the headrest guide sleeve is located at a preset blocking position; when the headrest rod is not matched with the headrest guide sleeve, the elastic blocking piece located at the preset blocking position can be embedded into the clamping groove located at the preset opening position, clamping of the elastic blocking piece and the clamping groove is formed, and relative movement of the headrest rod and the headrest guide sleeve is blocked.

Description

Technical Field

[0001] The present application relates to a seat headrest anti-foolproof structure, a seat headrest, a seat back and a seat. Background Art

[0002] The seat headrest is an important part of a seat, such as a car seat, in which the seat headrest is generally inserted into a headrest guide sleeve located at a seat back through a headrest rod to be installed to the seat back.

[0003] Due to the increasing market demand for personalized seats, there is a demand for different types of seat headrests. However, the inventors have found that in the assembly of seat headrests, there is a risk of mis-installation of different types of seat headrests during installation on the seat back (frame).

[0004] Therefore, there is a need in the art for a seat headrest anti-foolproof structure, a seat headrest, a seat back and a seat. Utility Model Content

[0005] The purpose of the present application is to provide a fool-proof structure for a seat headrest.

[0006] The purpose of this application is to provide a seat.

[0007] The purpose of this application is to provide a seat headrest.

[0008] The object of the present application is to provide a seat back.

[0009] In the first aspect, the present application provides a seat headrest anti-mistake structure, including a slot, which is arranged on at least one headrest rod of the seat headrest, the slot is located on the headrest rod, and the slot is located at a predetermined opening position; an elastic stopper, which is arranged on a headrest guide sleeve, the headrest guide sleeve corresponds to the headrest rod of the seat headrest, and the elastic stopper located on the headrest guide sleeve is located at a predetermined blocking position; wherein, when the headrest rod and the headrest guide sleeve are not matched, the elastic stopper located at the predetermined blocking position can be embedded in the slot located at the predetermined opening position, forming an engagement between the elastic stopper and the slot, thereby blocking the relative movement of the headrest rod and the headrest guide sleeve.

[0010] In the technical solution of the present embodiment, by providing a slot on the headrest rod and an elastic stopper on the headrest cover, the seat back can be matched with a specific type of headrest. When the seat back does not match the assembled headrest, the slot on the headrest rod of the seat headrest and the elastic stopper of the headrest guide cover of the seat back will be elastically engaged, so that the assembling operator can feel the resistance that blocks the relative movement of the headrest rod and the headrest guide cover for assembly, reminding the operator that mis-assembly has occurred, and the operator can apply an operating force to overcome the elastic force to pull out the mis-installed seat headrest, and can quickly re-perform the assembly operation after the mis-assembly is resolved.

[0011] In one or more embodiments of the fool-proof structure, there are multiple types of seat headrests; and the card slots are located on different sides of the headrest rods of different types of seat headrests.

[0012] In one or more embodiments of the anti-foolproof structure, the types of seat headrests include a first seat headrest and a second seat headrest; the first seat back corresponds to the first seat headrest, and the second seat back corresponds to the second seat headrest; wherein, the first seat headrest is provided with the card slot on the headrest rod on the first side, and the card slot is not provided on the headrest rod on the second side; the second seat headrest is not provided with the card slot on the headrest rod on the first side, and the card slot is provided on the headrest rod on the second side; the first seat back corresponding to the first seat headrest is not provided with the elastic stopper on the headrest guide sleeve on the first side, and is provided with the elastic stopper on the headrest rod on the second side; the second seat back corresponding to the second seat headrest is provided with the elastic stopper on the headrest guide sleeve on the first side, and is not provided with the elastic stopper on the headrest rod on the second side.

[0013] In one or more embodiments of the fool-proof structure, there are multiple types of seat headrests; all headrest rods of different types of seat headrests have the slots, and the predetermined opening positions of the slots of at least one side of the headrest rods of different types of seat headrests are different.

[0014] In one or more embodiments of the foolproof structure, there are multiple types of seat headrests, including a first seat headrest, a second seat headrest, a third seat headrest, and a fourth seat headrest; the first seat back corresponds to the first seat headrest, the second seat back corresponds to the second seat headrest, the third seat back corresponds to the third seat headrest, and the fourth seat back corresponds to the fourth seat headrest; wherein the first seat headrest is provided with the card slot located at the first predetermined opening position on the headrest rod on the first side, and the card slot located at the first predetermined opening position on the headrest rod on the second side; the second seat headrest is provided with the card slot located at the second predetermined opening position on the headrest rod on the first side, and the card slot located at the second predetermined opening position on the headrest rod on the second side; the third seat headrest is provided with the card slot located at the first predetermined opening position on the headrest rod on the first side, and the card slot located at the second predetermined opening position on the headrest rod on the second side; the fourth seat headrest is provided with a card slot located at the first predetermined opening position on the headrest rod on the first side The card slot is arranged at the second predetermined opening position, and the card slot is arranged at the first predetermined opening position on the headrest rod on the second side; the first seat back corresponding to the first seat headrest is provided with the elastic stopper at the second predetermined blocking position on the headrest guide sleeve on the first side, and the elastic stopper at the second predetermined blocking position on the headrest rod on the second side; the second seat back corresponding to the second seat headrest is provided with the elastic stopper at the first predetermined blocking position on the headrest guide sleeve on the first side, and the elastic stopper at the first predetermined blocking position on the headrest rod on the second side; the third seat back corresponding to the third seat headrest is provided with the elastic stopper at the second predetermined blocking position on the headrest guide sleeve on the first side, and the elastic stopper at the first predetermined blocking position on the headrest rod on the second side; the fourth seat back corresponding to the fourth seat headrest is provided with the elastic stopper at the first predetermined blocking position on the headrest guide sleeve on the first side, and the elastic stopper at the second predetermined blocking position on the headrest rod on the second side.

[0015] In one or more embodiments of the fool-proof structure, the elastic stopper comprises an ohmic retaining spring.

[0016] In one or more embodiments of the fool-proof structure, the outer layer of the ohmic retaining spring has a non-metallic coating layer.

[0017] In a second aspect, the present application provides a seat, including a seat headrest, including a headrest rod; a seat back, including a headrest guide sleeve; wherein the headrest rod and the headrest guide sleeve are connected by an anti-foolproof structure as described in the first aspect.

[0018] In the technical solution introduced above, due to the adoption of the fool-proof structure described in the first aspect, the risk of mis-installation during the installation of the seat headrest to the seat back (frame) is avoided, thereby improving the yield rate of seat assembly.

[0019] In the third aspect, the present application provides a seat headrest, including a headrest rod, at least one headrest rod having a slot, and the slot is located at a predetermined opening position; the slot is used to match an elastic stopper, the elastic stopper is arranged on a headrest guide sleeve, the headrest guide sleeve corresponds to the headrest rod of the seat headrest, and the elastic stopper located at the headrest guide sleeve is located at a predetermined blocking position; wherein, when the headrest rod and the headrest guide sleeve are not matched, the elastic stopper located at the predetermined blocking position can be embedded in the slot located at the predetermined opening position, forming an engagement between the elastic stopper and the slot, thereby blocking the relative movement of the headrest rod and the headrest guide sleeve.

[0020] In the technical solution introduced above, the seat headrest can avoid being misassembled with the seat back, which is convenient for assembly.

[0021] In a fourth aspect, the present application provides a seat back, comprising a headrest guide sleeve, wherein the headrest guide sleeve is used to match the headrest rod of the seat headrest, at least one headrest guide sleeve has an elastic stopper, and the elastic stopper is located at a predetermined blocking position; the elastic stopper is used to match a slot, the slot is provided on at least one headrest rod of the seat headrest, and the slot is located at a predetermined opening position; wherein, when the headrest rod and the headrest guide sleeve are not matched, the elastic stopper located at the predetermined blocking position can be embedded in the slot located at the predetermined opening position, forming an engagement between the elastic stopper and the slot, thereby blocking the relative movement of the headrest rod and the headrest guide sleeve.

[0022] In the technical solution introduced above, the seat back can avoid mis-assembly with the seat headrest, which is convenient for assembly. The assembly here is not limited to the assembly by operators of the assembly line, but can also be an assembly operation performed by the user. For example, when the seat returns to the normal sitting position from the bed mode, the user needs to install the headrest by himself. The above solution can also serve as a reminder for the mis-assembly. In addition, since the mis-assembly reminder effect can be achieved by only adjusting the direction of the elastic stopper, there is no need to re-open the mold for the headrest guide sleeve, which reduces costs.

[0023] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0025] Figure 1 It is a structural schematic diagram of a seat according to an embodiment of the present application.

[0026] Figure 2A , Figure 2B They are respectively schematic diagrams of the assembly and decomposition structures of the seat headrest anti-foolproof structure of one embodiment of the present application.

[0027] Figure 3A , Figure 3B It is a schematic diagram of the anti-foolproof structure of the seat headrest according to the first embodiment of the present application.

[0028] FIG. 4A to FIG. 4D It is a schematic diagram of the anti-foolproof structure of the seat headrest according to the second embodiment of the present application.

[0029] Reference numerals:

[0030] 100-seats

[0031] 10- Foolproof structure

[0032] 1-Card slot

[0033] 11-Predetermined opening position

[0034] 111-first predetermined opening position

[0035] 112-Second Predetermined Opening Position

[0036] 101-Headrest rod

[0037] 102-Headrest guide sleeve

[0038] 2-Elastic stopper

[0039] 21-Predetermined blocking position

[0040] 211-First predetermined blocking position

[0041] 212-Second Predetermined Blocking Position

[0042] 22-Ohm Circlip

[0043] 221-Ohm's retaining spring arm

[0044] 20- Seat headrest

[0045] 201-First seat headrest

[0046] 202-Second seat headrest

[0047] 203-Third seat headrest

[0048] 204-Fourth seat headrest

[0049] 30-Seat back

[0050] 301-First seat back

[0051] 302-Second seat back

[0052] 303-Third seat backrest

[0053] 304-Fourth seat backrest. DETAILED DESCRIPTION

[0054] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below with reference to the accompanying drawings.

[0055] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein, and therefore the present application is not limited to the specific embodiments disclosed below.

[0056] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0057] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, upright, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present application. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0058] In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and cannot be understood as limiting the scope of protection of this application. In addition, although the terms used in this application are selected from well-known and commonly used terms, some terms mentioned in the specification of this application may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article. In addition, it is required to understand this application not only by the actual terms used, but also by the meaning implied by each term.

[0059] The seat headrest anti-misassembly structure, seat headrest, seat back and seat disclosed in the embodiments of the present application prevent the seat headrest and the seat back from being misassembled during assembly, thereby improving assembly efficiency and yield rate. However, it can be understood that although the seat in this case takes a car seat as an example, it is not limited to this and can also be used for other seats with headrest rods and seat headrests.

[0060] A seat, such as a car seat, generally includes a seat body and a seat headrest located on the upper portion of the backrest of the seat body to provide head and neck support for passengers and / or drivers, thereby improving user experience.

[0061] like Figure 1 , Figure 2A as well as Figure 2B As shown, in the assembly of the seat 100, the seat headrest 20 is generally connected to the headrest guide sleeve 102 set on the seat back 30 (frame) through two headrest rods 101, so that the seat headrest 20 is connected to the seat back 30. Since the headrest guide sleeve 102 is buried inside the seat back 30, Figure 1 The middle headrest guide sleeve 102 is non-visible. Among them, the headrest rod 101 and the headrest guide sleeve 102 are connected by a fool-proofing structure 10 to avoid the seat headrest 20 and the seat back 30 from being misassembled during assembly. The specific structure of the fool-proofing structure 10 will be described in detail through one or more embodiments later. The meaning of the fool-proofing structure 10 (Fool-proofing, or Poka-yoke) is similar to the usual meaning in the art, that is, the use of a limiting structure to avoid errors, so that the operator can directly and accurately complete the correct operation without paying attention, experience or professional knowledge. In industrial design, in order to avoid the consequences of user operating errors (including unconscious actions or subconscious misoperations or careless body movements), there will be preventive measures for these possible situations, which are called fool-proofing.

[0062] refer to Figure 2A , Figure 2B , Figure 3A , Figure 3B ,as well as FIG. 4A to FIG. 4B As shown, the foolproof structure 10 includes a slot 1 located on a headrest rod 101 and an elastic stopper 2 located on a headrest guide sleeve 102 .

[0063] It is understandable that in Figure 3A , Figure 3B as well as FIG. 4A to FIG. 4D In order to illustrate the structure of the card slot 1, the headrest guide sleeve 102 corresponding to this part is omitted. The actual structure is as follows Figure 2A As shown, the card slot 1 is a non-visible component after assembly.

[0064] The card slot 1 is provided on at least one headrest rod 101 of the seat headrest, the card slot 1 is located on the headrest rod 101, and the card slot 1 is located at a predetermined opening position 11. Taking the two most common headrest rods 101 as an example, the card slot 1 can be as follows: Figure 3A , Figure 3B As shown, one of the headrest rods 101 is provided with a card slot 1, while the other headrest rod 101 is not provided with a card slot 1, and it can also be as follows FIG. 4A to FIG. 4D The two headrest rods 101 shown are both provided with a clamping slot 1. The predetermined opening position 11, i.e., the opening of the clamping slot 1, is located within the angle range of the outer wall of the headrest rod 101.

[0065] The elastic stopper 2 is arranged on the headrest guide sleeve 102, and the headrest guide sleeve 102 corresponds to the headrest rod 101 of the seat headrest for insertion and connection. The elastic stopper 2 located at the headrest guide sleeve 102 is located at a predetermined blocking position 21, and the predetermined blocking position 21 is the direction of the elastic stopper 2 that can correspond to the predetermined opening position of the slot 1. For example, as shown in the figure, the elastic stopper 2 is an ohmic retaining spring 22, and the predetermined blocking position 21 is the position of the arm 221 of the ohmic retaining spring after the ohmic retaining spring 22 is installed on the headrest guide sleeve 102. It can be understood that the use of the ohmic retaining spring 22 is easy to install and has low cost, but it is not limited to this. For example, structures such as metal shrapnel can also be used. Preferably, in some embodiments, the outer layer of the ohmic retaining spring 22 has a non-metallic coating layer, such as a plastic-coated structure, to avoid metal friction noise with the headrest rod and to increase the service life of the structure. In addition, it can be understood that the specific structure of the headrest guide sleeve 102, the headrest rod 101 and the elastic stopper 2 needs to meet the assembly stability. Its specific structure can be standardized by, for example, the matching size design of the headrest guide sleeve locking mechanism and the headrest rod slot on the market to ensure that regulatory test requirements are met.

[0066] like Figure 3A , Figure 3B ,as well as FIG. 4A to FIG. 4B As shown, when the headrest rod 101 and the headrest guide sleeve 102 are in a matching structure, that is, when they are correctly assembled, the elastic stopper 2 located at the predetermined blocking position 21 can be embedded in the slot 1 located at the predetermined opening position 11 without being stuck, and the two can be smoothly inserted and assembled. On the contrary, when the headrest rod 101 and the headrest guide sleeve 102 are not matched, an example of non-matching can be, for example, when Figure 3B Insert the headrest rod 101 Figure 3A The headrest guide sleeve 102, or Figure 3A Insert the headrest rod 101 Figure 3B The headrest guide sleeve 102, or when for example Figure 4A Insert the headrest rod 101 FIG. 4B to FIG. 4DIn any of the headrest guide sleeves 102 shown, the elastic stopper 2 located at the predetermined blocking position 21 can be embedded in the slot 1 located at the predetermined opening position 11, forming an engagement between the elastic stopper 2 and the slot, blocking the relative movement between the headrest rod 101 and the headrest guide sleeve 102, so as to remind the operator that mis-installation has occurred.

[0067] The beneficial effect of the embodiments introduced above is that by providing a slot on the headrest rod and an elastic stopper on the headrest cover, the seat back can be matched with a specific type of headrest. When the seat back does not match the assembled headrest, the slot on the headrest rod of the seat headrest and the elastic stopper on the headrest guide cover of the seat back will be elastically engaged, so that the assembling operator can feel the resistance that blocks the relative movement of the headrest rod and the headrest guide cover for assembly, reminding the operator that mis-assembly has occurred, and the operator can apply an operating force to overcome the elastic force to pull out the mis-installed seat headrest, and can quickly re-perform the assembly operation after the mis-assembly is resolved.

[0068] Continue to refer Figure 3A , Figure 3B As shown, in the first embodiment of the foolproof structure, there are multiple types of seat headrests; the slots 1 are located on different sides of the headrest rod 101 of different types of seat headrests, for example, Figure 3A The first seat headrest 201 shown in the figure has a headrest rod 101 on the first side (for example, the left side shown in the figure) provided with a card slot 1, and a headrest rod 101 on the second side (for example, the right side shown in the figure) is not provided with a card slot 1; Figure 3B The second seat headrest 202 shown in the figure has no card slot 1 on the headrest rod 101 on the first side (e.g., the left side shown in the figure), and has a card slot 1 on the headrest rod 101 on the second side (e.g., the right side shown in the figure). The card slot is located on the headrest rod 101 on the left side, while the headrest rod 101 on the right side has no card slot. Correspondingly, the first seat back 301 corresponding to the first seat headrest 201 has no elastic stopper 2 on the headrest guide sleeve 102 on the first side, and has an elastic stopper 2 on the headrest rod 101 on the second side; the second seat back 302 corresponding to the second seat headrest 202 has an elastic stopper 2 on the headrest guide sleeve 102 on the first side, and has no elastic stopper 2 on the headrest rod 101 on the second side. It can be understood that if the number of types of seat headrests is the same as the number of headrest rods, such as the case of two headrest rods as shown in the first embodiment, since there is only one headrest rod 101 with a slot 1 and one headrest guide sleeve 102 with an elastic stopper 2, the setting of the predetermined opening position 11 of the slot 1 and the predetermined blocking position 21 of the elastic stopper 2 is more flexible. The setting can be that the range of the predetermined opening position 11 of the slot 1 is the entire circumference of the outer wall of the headrest rod 101, that is, an angle range of 360°, and the predetermined blocking position 21 of the elastic stopper 2 can be distributed in any direction, thereby realizing an anti-foolproof structure. Therefore, the structure is simple, easy to process, and easy to implement. Figure 3A , Figure 3B The figures show respectively the first seat headrest 201 being correctly plugged and assembled on the first seat back 301, and the second seat headrest 202 being correctly disassembled and assembled on the second seat back 302. The elastic stopper 2 is not in contact with the slot. It can be understood that if the second seat headrest 202 is mistakenly assembled on the first seat back 301, or the first seat headrest 201 is mistakenly assembled on the second seat back 302, the elastic stopper 2, such as the arm 221 of the ohmic retaining spring, will be embedded in the slot 1 to prevent further assembly.

[0069] Continue to refer FIG. 4A to FIG. 4D As shown, in the second embodiment of the foolproof structure, there are multiple types of seat headrests; all headrest rods 101 of different types of seat headrests have a slot 1, and the slots 1 of at least one side of the headrest rods 101 of different types of seat headrests have different predetermined opening positions 11. Figure 4A The first headrest 201 shown in the figure has a slot 1 at a first predetermined opening position 111 on the headrest rod 101 on the first side (e.g., the left side shown in the figure), and a slot 1 at a first predetermined opening position 111 on the headrest rod 101 on the second side (e.g., the right side shown in the figure). Figure 4B As shown, the second seat headrest 202 is provided with a slot 1 located at the second predetermined opening position 112 on the headrest rod 101 on the first side, and a slot 1 located at the second predetermined opening position 112 on the headrest rod 101 on the second side. Figure 4C As shown, the third seat headrest 203 has a slot 1 at a first predetermined opening position 111 on the headrest rod 101 on the first side, and a slot 1 at a second predetermined opening position 112 on the headrest rod 101 on the second side. Figure 4DAs shown, the fourth seat headrest 204 is provided with a slot 1 at the second predetermined opening position 112 on the headrest rod 101 on the first side, and a slot 1 at the first predetermined opening position 112 on the headrest rod 101 on the second side. The first seat back 301 corresponding to the first seat headrest 201 is provided with an elastic stopper 2 at the second predetermined blocking position 212 on the headrest guide sleeve 102 on the first side, and an elastic stopper 2 at the second predetermined blocking position 212 on the headrest rod 101 on the second side; the second seat back 302 corresponding to the second seat headrest 202 is provided with an elastic stopper 2 at the first predetermined blocking position 211 on the headrest guide sleeve 102 on the first side, and an elastic stopper 2 at the first predetermined blocking position 211 on the headrest rod 101 on the second side; The third seat back 303 corresponding to the third seat headrest 203 is provided with an elastic stopper 2 located at the second predetermined blocking position 212 on the headrest guide sleeve 102 on the first side, and is provided with an elastic stopper 2 located at the first predetermined blocking position 211 on the headrest rod 101 on the second side; the fourth seat back 304 corresponding to the fourth seat headrest 204 is provided with an elastic stopper 2 located at the first predetermined blocking position 211 on the headrest guide sleeve 102 on the first side, and is provided with an elastic stopper 2 located at the second predetermined blocking position 212 on the headrest rod 101 on the second side. FIG. 4A to FIG. 4D The figures show that the first seat headrest 201 is correctly plugged and assembled on the first seat back 301, the second seat headrest 202 is correctly disassembled and assembled on the second seat back 302, the third seat headrest 203 is correctly plugged and assembled on the third seat back 303, and the fourth seat headrest 204 is correctly plugged and assembled on the fourth seat back 304. The elastic stopper 2 is not in contact with the card slot. It can be understood that if the first seat headrest 201 is mistakenly assembled on the second seat back 302, the third seat back 303, and the fourth seat back 304, or the second seat headrest 202 is mistakenly assembled In the case where the first seat back 301, the third seat back 303, and the fourth seat back 304 are assembled, or the third seat headrest 203 is mistakenly assembled on the first seat back 301, the second seat back 302, and the fourth seat back 304, or the fourth seat headrest 204 is mistakenly assembled on the first seat back 301, the second seat back 302, and the third seat back 303, the elastic blocking member 2 located at the first predetermined blocking position 211, such as the arm 221 of the ohmic retaining spring, will be embedded in the slot 1 located at the second predetermined opening position 112 to prevent further assembly.

[0070] It can be understood that, compared with the first embodiment, the second embodiment can realize foolproof assembly between more types of seat headrests. It can be understood that the predetermined opening position of the slot and the predetermined blocking position of the corresponding elastic blocking member in the second embodiment are not limited to two positions, that is, they are not limited to only the first predetermined opening position, the second predetermined opening position and the corresponding first predetermined blocking position, the second predetermined blocking position, and can be more, so as to realize foolproof assembly of more types of seat headrests. The number of types of foolproof assembly of seat headrests that can be realized is the product of the types of predetermined opening positions of the slot and the number of headrest rods. For example, the number of types of foolproof assembly of seat headrests that can be realized in the second embodiment is 2*2=4. It can be understood that if a third predetermined opening position and a corresponding third predetermined blocking position are set, the number is 3*2=6, and so on, which will not be repeated.

[0071] At this time, the first predetermined opening position 111 and the second predetermined opening position 112 need to be staggered. For example, the first predetermined opening position 111 shown in the figure is roughly located in the range of -30° to +30° of the outer wall of the headrest rod 101, which is roughly an angle range of 60°, and the second predetermined opening position 112 is roughly located in the range of -120° to -60° of the outer wall of the headrest rod 101, which is roughly an angle range of 60°. The first predetermined opening position 111 and the second predetermined opening position 112 are staggered in the opening angle range of the outer wall of the headrest rod 101.

[0072] As described above, the present application also provides a seat headrest 20 or a seat back 30, that is, the seat headrest 20 whose headrest rod 101 has a slot 1, and / or the seat back 30 whose headrest guide sleeve 102 has an elastic stopper 2 can be used as a separate replacement part for the seat 100.

[0073] In some embodiments, the seat headrest 20 includes a headrest rod 101, at least one headrest rod 101 has a slot 1, and the slot 1 is located at a predetermined opening position 11; the slot 1 is used to match the elastic stopper 2, the elastic stopper 2 is arranged on the headrest guide sleeve 102, the headrest guide sleeve 102 corresponds to the headrest rod 101 of the seat headrest, and the elastic stopper 2 located at the headrest guide sleeve 102 is located at a predetermined blocking position 21; wherein, when the headrest rod 101 and the headrest guide sleeve 102 are not matched, the elastic stopper 2 located at the predetermined blocking position 21 can be embedded in the slot 1 located at the predetermined opening position 11, forming an engagement between the elastic stopper 2 and the slot, thereby blocking the relative movement of the headrest rod 101 and the headrest guide sleeve 102.

[0074] Accordingly, in some embodiments, the seat back 30 includes a headrest guide sleeve 102, which is used to match the headrest rod 101 of the seat headrest, at least one headrest guide sleeve 102 has an elastic stopper 2, and the elastic stopper 2 is located at a predetermined blocking position 21; the elastic stopper 2 is used to match the slot 1, the slot 1 is arranged on at least one headrest rod 101 of the seat headrest, and the slot 1 is located at a predetermined opening position 11; wherein, when the headrest rod 101 and the headrest guide sleeve 102 are not matched, the elastic stopper 2 located at the predetermined blocking position 21 can be embedded in the slot 1 located at the predetermined opening position 11, forming an engagement between the elastic stopper 2 and the slot, thereby blocking the relative movement of the headrest rod 101 and the headrest guide sleeve 102.

[0075] In summary, the beneficial effects of the seat headrest anti-mismatch structure, seat headrest, seat back and seat introduced in the above embodiments include but are not limited to: by setting a slot on the headrest rod and an elastic stopper on the headrest cover, the seat back can be matched with a specific type of headrest. When the seat back does not match the assembled headrest, the slot of the headrest rod of the seat headrest and the elastic stopper of the headrest guide sleeve of the seat back will be elastically engaged, so that the assembling operator can feel the resistance that blocks the relative movement of the headrest rod and the headrest guide sleeve for assembly, reminding the operator that misassembly has occurred, and the operator can apply an operating force to overcome the elastic force to pull out the misinstalled seat headrest, and can quickly re-assemble after the misassembly is resolved, which is convenient for the operator to perform assembly and improves the yield rate of seat assembly.

[0076] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications fall within the protection scope of the present invention.

Claims

1. A seat headrest anti-fool structure (10), characterized in that: include: A card slot (1) is provided on at least one headrest rod (101) of a seat headrest, the card slot (1) is located on the headrest rod (101), and the card slot (1) is located at a predetermined opening position (11); An elastic stopper (2) is arranged on a headrest guide sleeve (102), the headrest guide sleeve (102) corresponds to a headrest rod of the seat headrest, and the elastic stopper (2) located on the headrest guide sleeve (102) is located at a predetermined blocking position (21); When the headrest rod (101) and the headrest guide sleeve (102) are not matched, the elastic blocking member (2) located at the predetermined blocking position (21) can be embedded in the slot (1) located at the predetermined opening position (11), forming an engagement between the elastic blocking member (2) and the slot, thereby blocking the relative movement of the headrest rod (101) and the headrest guide sleeve (102).

2. The seat headrest foolproof structure (10) as claimed in claim 1, characterized in that: There are multiple types of seat headrests; the card slots (1) are located on headrest rods (101) on different sides of different types of seat headrests.

3. The seat headrest foolproof structure (10) as claimed in claim 2, characterized in that: The types of the seat headrests include a first seat headrest (201) and a second seat headrest (202); the first seat backrest (301) corresponds to the first seat headrest (201), and the second seat backrest (302) corresponds to the second seat headrest (202); Wherein, the first seat headrest (201) is provided with the card slot (1) on the headrest rod (101) on the first side, and the card slot (1) is not provided on the headrest rod (101) on the second side; the second seat headrest (202) is not provided with the card slot (1) on the headrest rod (101) on the first side, and the card slot (1) is provided on the headrest rod (101) on the second side; The first seat back (301) corresponding to the first seat headrest (201) is not provided with the elastic stopper (2) on the headrest guide sleeve (102) on the first side, and is provided with the elastic stopper (2) on the headrest rod (101) on the second side; the second seat back (302) corresponding to the second seat headrest (202) is provided with the elastic stopper (2) on the headrest guide sleeve (102) on the first side, and is not provided with the elastic stopper (2) on the headrest rod (101) on the second side.

4. The seat headrest foolproof structure (10) as claimed in claim 1, characterized in that: There are multiple types of seat headrests; all headrest rods (101) of different types of seat headrests have the clamping slot (1), and the clamping slots (1) of at least one side of the headrest rods (101) of the different types of seat headrests have different predetermined opening positions (11).

5. The seat headrest foolproof structure (10) as claimed in claim 4, characterized in that: There are multiple types of seat headrests, including a first seat headrest (201), a second seat headrest (202), a third seat headrest (203), and a fourth seat headrest (204); the first seat backrest (301) corresponds to the first seat headrest (201), the second seat backrest (302) corresponds to the second seat headrest (202), the third seat backrest (303) corresponds to the third seat headrest (203), and the fourth seat backrest (304) corresponds to the fourth seat headrest (204); Wherein, the first seat headrest (201) is provided with the card slot (1) located at the first predetermined opening position (111) on the headrest rod (101) on the first side, and is provided with the card slot (1) located at the first predetermined opening position (111) on the headrest rod (101) on the second side; the second seat headrest (202) is provided with the card slot (1) located at the second predetermined opening position (112) on the headrest rod (101) on the first side, and is provided with the card slot (1) located at the second predetermined opening position (112) on the headrest rod (101) on the second side. ); the third seat headrest (203) is provided with the card slot (1) located at the first predetermined opening position (111) on the headrest rod (101) on the first side, and is provided with the card slot (1) located at the second predetermined opening position (112) on the headrest rod (101) on the second side; the fourth seat headrest (204) is provided with the card slot (1) located at the second predetermined opening position (112) on the headrest rod (101) on the first side, and is provided with the card slot (1) located at the first predetermined opening position (112) on the headrest rod (101) on the second side; The first seat back (301) corresponding to the first seat headrest (201) is provided with the elastic stopper (2) located at the second predetermined blocking position (212) on the headrest guide sleeve (102) on the first side, and the elastic stopper (2) located at the second predetermined blocking position (212) is provided on the headrest rod (101) on the second side; the second seat back (302) corresponding to the second seat headrest (202) is provided with the elastic stopper (2) located at the first predetermined blocking position (211) on the headrest guide sleeve (102) on the first side, and the elastic stopper (2) located at the first predetermined blocking position (211) is provided on the headrest rod (101) on the second side; The third seat back (303) corresponding to the third seat headrest (203) is provided with the elastic stopper (2) located at the second predetermined blocking position (212) on the headrest guide sleeve (102) on the first side, and the elastic stopper (2) located at the first predetermined blocking position (211) is provided on the headrest rod (101) on the second side; the fourth seat back (304) corresponding to the fourth seat headrest (204) is provided with the elastic stopper (2) located at the first predetermined blocking position (211) on the headrest guide sleeve (102) on the first side, and the elastic stopper (2) located at the second predetermined blocking position (212) is provided on the headrest rod (101) on the second side.

6. The seat headrest foolproof structure (10) as claimed in claim 1, characterized in that: The elastic stopper (2) comprises an ohmic retaining spring (22).

7. The seat headrest foolproof structure (10) as claimed in claim 6, characterized in that: The outer layer of the ohmic retaining spring (22) has a non-metallic coating layer.

8. A seat (100), characterized in that: include: A seat headrest (20), comprising a headrest rod (101); A seat back (30) including a headrest guide sleeve (102); Wherein, the headrest rod (101) and the headrest guide sleeve (102) are connected via the fool-proof structure (10) as described in any one of claims 1 to 7.

9. A seat headrest (20), characterized in that: The invention comprises a headrest rod (101), at least one headrest rod (101) having a slot (1), and the slot (1) is located at a predetermined opening position (11); the slot (1) is used to match an elastic stopper (2), the elastic stopper (2) is arranged on a headrest guide sleeve (102), the headrest guide sleeve (102) corresponds to the headrest rod (101) of the seat headrest, and the elastic stopper (2) located at the headrest guide sleeve (102) is located at a predetermined blocking position (21); wherein, when the headrest rod (101) and the headrest guide sleeve (102) are not matched, the elastic stopper (2) located at the predetermined blocking position (21) can be embedded in the slot (1) located at the predetermined opening position (11), forming a snap fit between the elastic stopper (2) and the slot, thereby blocking the relative movement of the headrest rod (101) and the headrest guide sleeve (102).

10. A seat back (30), characterized in that: The invention comprises a headrest guide sleeve (102), wherein the headrest guide sleeve (102) is used to match the headrest rod (101) of the seat headrest, and at least one headrest guide sleeve (102) has an elastic stopper (2), and the elastic stopper (2) is located at a predetermined blocking position (21); the elastic stopper (2) is used to match a slot (1), and the slot (1) is arranged on at least one headrest rod (101) of the seat headrest, and the slot (1) is located at a predetermined opening position (11); wherein, when the headrest rod (101) and the headrest guide sleeve (102) are not matched, the elastic stopper (2) located at the predetermined blocking position (21) can be embedded in the slot (1) located at the predetermined opening position (11), so as to form a snap fit between the elastic stopper (2) and the slot, thereby blocking the relative movement of the headrest rod (101) and the headrest guide sleeve (102).

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