Air pump housing structure capable of shock absorption, air pump assembly having concealed mounting structure, and vehicle seat

Abstract

An air pump housing structure capable of shock absorption, an air pump assembly having a concealed mounting structure, and a vehicle seat. The air pump housing structure is mounted on a support structure (21) inside the vehicle seat and comprises a shell; the shell is connected to the support structure (21) by means of a medium plate (2); and the shell is provided with a first mounting portion (1), the medium plate (2) is provided with a second mounting portion (3), and the first mounting portion (1) is connected to the second mounting portion (3) by means of an elastic connection portion (6), such that the medium plate (2) is connected to the shell by mean of the elastic connection portion (6).

Description

A shock-absorbing air pump housing structure, an air pump assembly with a concealed installation structure, and a car seat

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to a Chinese patent application with application number 202420175930.X filed with the Chinese Patent Office on January 24, 2024, entitled “A shock-absorbing air pump housing structure and automobile seat”;

[0003] And the priority of the Chinese patent application with application number 202420183430.0 submitted to the China Patent Office on January 24, 2024, entitled "An air pump assembly and car seat with a concealed mounting structure", all of which are incorporated by reference into this application. Technical Field

[0004] The present application relates to the technical field of air pumps, and in particular to an air pump housing structure capable of reducing shock, an air pump assembly with a concealed installation structure, and a car seat. Background Art

[0005] With the development of technology in the field of vehicle transportation, people have higher and higher requirements for vehicle riding comfort. Seat lumbar and back support and massage devices have come into being. At the same time, the requirements for vehicle interior quietness are also equally strict.

[0006] However, since the air pump is arranged inside the seat, the air pump itself will generate noise and vibration when working. Although the air pump shell of the car seat can reduce noise and vibration, there will still be residual vibration transmitted to the seat. These vibrations will be transmitted to the seat through the seat frame fixed by the air pump shell, which will generate greater noise and vibration. These noise and vibrations seriously affect the comfort of the driver and passengers.

[0007] Application Contents

[0008] In a first aspect, an embodiment of the present application provides a shock-absorbing air pump housing structure, the air pump housing structure being mounted on a support structure inside a car seat, the air pump housing structure comprising:

[0009] A housing, wherein at least one first mounting portion is provided on a surface of the housing;

[0010] a dielectric plate, the dielectric plate having a first side wall and a second side wall disposed opposite to each other, the first side wall being close to the supporting structure, and the second side wall being close to the housing;

[0011] The dielectric plate is provided with a second mounting portion corresponding to the first mounting portion; the first mounting portion is connected to the second mounting portion to achieve connection between the housing and the dielectric plate; the dielectric plate is also provided with at least one fixing portion, and the dielectric plate is connected to the support structure via the fixing portion;

[0012] An elastic connecting portion is made of elastic material and is configured to connect the first mounting portion and the second mounting portion.

[0013] Optionally, the fixing portion includes a fixing member having a first fixing hole formed therein, the fixing member extending through the first fixing hole and configured to connect the dielectric plate to the support structure. Optionally, the fixing member is a screw, a plastic fixing nail, or a rubber rivet. Optionally, the first mounting portion has a first mounting hole extending therethrough, the second mounting portion has a second mounting hole extending therethrough, and the elastic connecting portion extends through the second mounting hole and the first mounting hole in sequence to connect the first mounting portion to the second mounting portion.

[0014] Optionally, the elastic connecting part is a shock-absorbing rivet, which includes a hand-held part and a first connecting part that are coaxially fixedly connected, and the diameter of the first connecting part is larger than the diameter of the hand-held part. Two clamping grooves are provided on the circumferential outer wall of the first connecting part along its axial direction, and the two clamping grooves are respectively configured to clamp the first mounting part and the second mounting part.

[0015] Optionally, a limiting portion is provided at one end of the first connecting portion close to the dielectric plate, and the limiting portion abuts against the first side wall and is configured to limit the shock-absorbing rivet.

[0016] Optionally, one end of the elastic connecting portion is a penetration end and the other end is a limiting end, and the penetration end passes through the first mounting portion and the second mounting portion from the inside of the shell along the first direction; the limiting end is provided with a limiting portion, and the limiting portion abuts against the inner wall of the shell.

[0017] Optionally, the elastic connecting portion is an elastic rivet, and the outer wall of the elastic rivet is provided with two annular grooves, which are respectively close to the penetration end and the limiting end, and are respectively configured to clamp and position the first mounting hole and the second mounting hole.

[0018] Optionally, the first mounting portion includes a recessed groove, which is provided on the inner wall of the shell. The recessed groove opens toward the interior of the shell, and one end thereof away from the opening protrudes from the outer wall of the shell along the first direction. A first mounting hole is provided through the recessed groove.

[0019] Optionally, the penetration end passes through the first mounting hole and the second mounting hole in sequence along the first direction, and the limiting portion and the sink are adapted to each other.

[0020] Optionally, a protrusion is provided on a side wall of the limiting portion away from the penetration end, and the protrusion is configured to buffer collision of the air pump body.

[0021] Optionally, the second mounting portion includes a clearance groove, the opening of the clearance groove faces the shell, and one end thereof away from the shell protrudes from the side wall of the dielectric plate away from the shell, and the second mounting hole is formed through the clearance groove.

[0022] Optionally, the housing includes a first shell and a second shell that are detachably connected and have openings facing each other, the first shell and the second shell are connected, and an accommodating space is formed between the first shell and the second shell, and the accommodating space is configured to accommodate the air pump assembly; the first shell is provided with at least one first mounting portion, and / or the second shell is provided with at least one first mounting portion;

[0023] The first shell and the second shell are a left-right split structure or an upper-lower split structure;

[0024] The first housing is provided with an electrical connection component accommodating cavity, and / or the second housing is provided with an electrical connection component accommodating cavity; the electrical connection component accommodating cavity is configured to accommodate an electrical connector (18) of an air pump assembly.

[0025] Optionally, the first shell and the second shell are snap-connected to each other.

[0026] Optionally, the first shell and the second shell are in a buckled structure along the first direction, and a buckle and a connecting member are respectively provided at mutually adjacent edges of the first shell and the second shell;

[0027] Or the first shell and the second shell are a buckled structure along the second direction, and the buckle and the connecting member are respectively provided at the edges of the first shell and the second shell where they are close to each other; the second direction is perpendicular to the first direction.

[0028] Optionally, the shell is further provided with an electrical connection component accommodating cavity, and the electrical connection component accommodating cavity is configured to accommodate an electrical connector of the air pump assembly.

[0029] Optionally, the first sidewall is further provided with at least one positioning portion, having a protrusion protruding from one end of the first sidewall away from the dielectric plate in a direction away from the dielectric plate. The protrusion is configured to mate with a positioning hole on the support structure corresponding to the positioning portion, thereby positioning the dielectric plate. Optionally, the first sidewall of the dielectric plate is provided with a plurality of reinforcing ribs configured to enhance the strength of the dielectric plate.

[0030] In a second aspect, an embodiment of the present application provides an air pump system, comprising: an air pump assembly and a shock-absorbing air pump housing structure as described in the technical solution provided in any of the above embodiments, wherein the air pump assembly is arranged in the housing.

[0031] In a third aspect, an embodiment of the present application provides a car seat, comprising the shock-absorbing air pump housing structure, an air pump assembly and the support structure; the air pump assembly is arranged in the housing, and the medium plate is connected to the support structure through the fixing portion.

[0032] Optionally, the car seat further includes a seat body, and the support structure is arranged inside the seat body.

[0033] Optionally, the support structure is provided with a second connection hole, and a fixing member sequentially passes through the second connection hole and the second connection portion of the dielectric plate to mount the dielectric plate on the support structure; the fixing member is made of elastic material and is configured to buffer vibration.

[0034] Optionally, at least one positioning portion is further provided on the side wall of the medium plate away from the shell, a positioning hole is provided on the support structure corresponding to the positioning portion, and the positioning portion extends into the positioning hole to locate the installation position of the shell.

[0035] In a fourth aspect, an embodiment of the present application provides a car, comprising the car seat described in the technical solution provided in any of the above embodiments.

[0036] In a fifth aspect, the present application provides an air pump assembly with a concealed installation structure, comprising:

[0037] Air pump body;

[0038] A housing structure comprising a first housing and a second housing that are detachably connected and have openings facing each other, wherein a mounting space capable of accommodating the air pump body is defined between the first housing and the second housing; and at least one first mounting portion is provided on the housing structure;

[0039] A medium plate, wherein a second mounting portion is provided on the medium plate corresponding to the first mounting portion, and at least one connecting portion is provided on the medium plate and is configured to be connected to a seat frame;

[0040] An elastic connecting portion, one end of the elastic connecting portion is a penetration end, and the other end is a limiting end. The penetration end passes through the first mounting portion and the second mounting portion along a first direction from the inside of the shell structure. The limiting end is provided with a limiting portion, and the limiting portion abuts against the inner wall of the shell structure.

[0041] Optionally, the first mounting portion includes a recessed groove, which is provided on the inner wall of the shell structure. The recessed groove opens toward the interior of the shell structure, and one end thereof away from the opening protrudes from the outer wall of the shell structure along the first direction. A first mounting hole is provided through the recessed groove.

[0042] Optionally, the second mounting portion includes a clearance groove, the clearance groove opens toward the shell structure, and one end thereof away from the shell structure protrudes from a side wall of the dielectric plate away from the shell structure, and a second mounting hole is formed through the clearance groove.

[0043] Optionally, the penetration end passes through the first mounting hole and the second mounting hole in sequence along the first direction, and the limiting portion and the sink are adapted to each other.

[0044] Optionally, a protrusion is provided on a side wall of the limiting portion away from the penetration end, and the protrusion is configured to buffer collision of the air pump structure.

[0045] Optionally, the elastic connecting portion is an elastic rivet, and two annular grooves are provided on the outer wall of the elastic rivet. The two annular grooves are respectively close to the penetration end and the limiting end, and are respectively configured to clamp and position the first mounting hole and the second mounting hole.

[0046] Optionally, the first shell and the second shell are in a buckled structure along the first direction, and a buckle and a connecting member are respectively provided at mutually adjacent edges of the first shell and the second shell;

[0047] Or the first shell and the second shell are a buckled structure along the second direction, and the locking member and the connecting member are respectively provided at the edges of the first shell and the second shell where they are close to each other; the second direction is perpendicular to the first direction.

[0048] In a sixth aspect, an embodiment of the present application provides a car seat, comprising an air pump assembly with a concealed mounting structure and a seat body, wherein the seat frame is arranged inside the seat body, and the air pump assembly with a concealed mounting structure is arranged on the seat frame.

[0049] Optionally, a second connecting hole is provided on the seat frame corresponding to the second connecting portion of the medium plate, and a connecting member passes through the second connecting hole and the second connecting portion in sequence to install the medium plate on the seat frame. The connecting member is made of elastic material and is configured to buffer vibrations.

[0050] Optionally, at least one positioning portion is further provided on the side wall of the medium plate away from the first shell, and a positioning hole is provided on the seat frame corresponding to the positioning portion. The positioning portion extends into the positioning hole and is configured to position the installation position of the shell structure.

[0051] In a seventh aspect, an embodiment of the present application provides a car, comprising the car seat described above.

[0052] Compared with the existing technology, the advantages of the embodiments of the present disclosure include, for example:

[0053] In summary, the present technical solution specifically discloses an air pump housing structure capable of shock absorption, which is mounted on a support structure within a car seat. The air pump housing structure includes a housing on which a first mounting portion is provided; and a dielectric plate having a first side wall and a second side wall disposed opposite to each other, the second side wall being disposed adjacent to the housing and having a second mounting portion disposed thereon corresponding to the first mounting portion, the first mounting portion and the second mounting portion being connected. The dielectric plate is provided with a fixing portion connected to the support structure; an elastic connecting portion sequentially passes through the second mounting portion and the first mounting portion to connect the dielectric plate to the housing.

[0054] By providing a dielectric plate and connecting the dielectric plate and the housing through an elastic connection part, the effect of reducing the vibration of the air pump transmitted from the housing to the dielectric plate and then from the dielectric plate to the car seat is achieved, thereby reducing noise and vibration and improving the comfort of the driver and passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0056] FIG1 is a schematic structural diagram of the air pump housing capable of shock absorption according to this embodiment;

[0057] FIG2 is a side view of the air pump housing structure capable of shock absorption according to this embodiment;

[0058] FIG3 is a schematic diagram of a dielectric plate according to this embodiment;

[0059] FIG4 is a front view of the dielectric plate of this embodiment;

[0060] FIG5 is a schematic diagram of the elastic connection portion of this embodiment;

[0061] FIG6 is a side view of the elastic connecting portion of this embodiment;

[0062] FIG7 is an exploded view of the structure of the air pump housing capable of shock absorption according to this embodiment;

[0063] FIG8 is a schematic diagram of the upper and lower split structure of the housing in this embodiment;

[0064] FIG9 is a side sectional view of the air pump assembly with a concealed installation structure according to the present embodiment;

[0065] FIG10 is a front view of the air pump assembly with a concealed installation structure according to this embodiment;

[0066] FIG11 is a top view of the first housing according to an embodiment of the present application;

[0067] FIG12 is a side view of the first housing according to an embodiment of the present application;

[0068] FIG13 is a perspective view of an air pump assembly with a concealed installation structure according to this embodiment;

[0069] FIG14 is a cross-sectional view of the air pump assembly and the car seat installation with a concealed installation structure according to this embodiment;

[0070] FIG15 is an exploded view of the air pump assembly with a concealed installation structure according to this embodiment;

[0071] FIG16 is a schematic diagram of an elastic rivet as the first connecting member in this embodiment;

[0072] FIG17 is a schematic diagram showing the housing structure of this embodiment being a buckling structure along the second direction.

[0073] Numbers in the figure: 1. First mounting part; 2. Medium plate; 3. Second mounting part; 4. Fixing part; 5. Fixing member (connecting member); 6. Elastic connecting part; 8. Positioning part; 9. Protrusion; 10. Reinforcing rib; 11. Hand-held part; 12. First connecting part; 13. Clamping groove; 14. Limiting part; 15. First shell (first shell); 16. Second shell (second shell); 17. Air pump assembly; 171. Air pump body; 18. Electrical connector; 19. Fastener; 20. Snap-fit ​​member; 21. Support structure (seat frame); 22. Electrical connection assembly accommodating chamber; 23. First fixing hole; 24. First mounting hole; 25. Second mounting hole; 26. Insertion end; 27. Sink; 28. Makeshift groove; 29. ​​Annular groove; 30. Protrusion; 31. Limiting end. DETAILED DESCRIPTION

[0074] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0075] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0076] Please refer to Figures 1 and 2, a shock-absorbing air pump housing structure is installed on a support structure 21 inside a car seat. The support structure 21 can be a car seat frame or a seat back panel. The air pump housing structure includes:

[0077] The shell has at least two first mounting portions 1 on its surface, and a first mounting hole 24 is formed through the first mounting portion 1;

[0078] The dielectric plate 2 has a first side wall and a second side wall disposed opposite to each other, the first side wall is close to the support structure 21, and the second side wall is close to the housing;

[0079] The dielectric plate 2 is provided with a second mounting portion 3 corresponding to the first mounting portion 1, and a second mounting hole 25 is formed through the second mounting portion 3;

[0080] The dielectric plate 2 is further provided with at least one fixing portion 4. The fixing portion 4 may be a hook, rivet, or other structure integrally formed with the dielectric plate 2 and directly connected to the support structure 21. Alternatively, the fixing portion 4 may be provided with a first fixing hole 23 at one end away from the dielectric plate 2 and connected to the support structure 21 via a fixing member 5.

[0081] The elastic connecting part 6 is made of elastic material and can be a shock-absorbing rivet. The elastic connecting part 6 passes through the second mounting hole 25 and the first mounting hole 24 in sequence to connect the medium plate 2 and the shell.

[0082] It should be noted that, as shown in Figures 3 and 4, in this embodiment, the dielectric plate 2 is configured as a square structure, with second mounting portions 3 provided at each of its four corners. Similarly, four first mounting portions 1 are provided on the surface of the housing corresponding to the four second mounting portions 3, and the dielectric plate 2 and the housing are connected via four elastic connecting portions 6.

[0083] Optionally, the shape of the medium plate 2 is not specifically limited and can be designed according to the support structure 21 in different car seats and the installation position of the air pump assembly 17. For example, the medium plate 2 can also be designed in a circular shape.

[0084] It should be noted that the first mounting hole 24 and the second mounting hole 25 can be circular holes or C-shaped holes;

[0085] Optionally, the first mounting portion 1 and the second mounting portion 3 may be fixed by gluing.

[0086] In this embodiment, three fixing portions 4 are provided on the first side wall of the dielectric plate 2. These fixing portions 4 are cylindrical and extend away from the dielectric plate 2. First fixing holes 23 are defined at the ends of the fixing portions 4 facing away from the dielectric plate 2. The axis connecting the three first fixing holes 23 forms an isosceles triangle, ensuring the structural stability of the dielectric plate 2 and preventing deformation. Of course, the number of fixing portions 4 can be one, two, four, or more. The placement of the multiple fixing portions 4 on the dielectric plate 2 can be determined based on actual installation requirements and is not limited here.

[0087] In this embodiment, one of the first fixing holes 23 serves as a vertex of an isosceles triangle, and the other two are located below it. The axis line connecting the two lower first fixing holes 23 is parallel to the first direction, which is the horizontal direction in FIG. 4 .

[0088] It should be noted that the first fixing hole 23 can optionally be a threaded hole, and a second fixing hole is provided on the support structure 21 corresponding to the first fixing hole 23. The fixing member 5 passes through the second fixing hole and extends into the first fixing hole 23, so that the medium plate 2 can be installed on the support structure 21; optionally, the fixing member 5 is a screw, which is threadedly connected to the first fixing hole 23 to ensure the stability of the installation.

[0089] It should be noted that, as shown in Figures 2 and 8, the fixing part 5 can be a connecting part made of hard materials such as screws and plastic fixing nails, or a connecting part made of elastic materials such as rubber rivets. When a connecting part made of elastic material is selected, the medium plate 2 and the support structure 21 are connected by the connecting part made of elastic material to form a secondary shock-absorbing structure to buffer the vibration again.

[0090] As shown in FIG4 , two positioning portions 8 are provided on the first side wall. The two positioning portions 8 are respectively located on both sides of the fixing portion 4 where the first fixing hole 23 as the vertex is located. The positioning portions 8 are cylindrical, and the line connecting the axes of the two positioning portions 8 is parallel to the first direction and is collinear with the axis of the first fixing hole 23 as the vertex.

[0091] Abutment plates are evenly arranged on the circumferential outer wall of the positioning portion 8, configured to abut the support structure 21. A protrusion 9 is provided on the end of the positioning portion 8 away from the dielectric plate 2, projecting in a direction away from the dielectric plate 2. In this embodiment, the protrusion 9 is a cross-shaped structure. Positioning holes corresponding to the positioning portion 8 are provided on the support structure 21. The protrusion 9 passes through the positioning holes to position the dielectric plate 2.

[0092] It should be noted that, optionally, one positioning portion 8 and one fixing portion 4 are respectively provided. When the dielectric plate 2 is installed and fixed, a protrusion 9 on the positioning portion 8 is passed through the positioning hole on the support structure 21, and a fixing member 5 is passed through the second fixing hole of the support structure 21 and screwed into the first fixing hole 23. This can stably connect the dielectric plate 2 to the support structure 21 and prevent the dielectric plate 2 from being positioned and causing displacement of the air pump assembly 17.

[0093] In other embodiments, the number of the positioning portions 8 and the fixing portions 4 is set according to the actual support structure 21 , and is specifically designed corresponding to different support structures 21 and installation positions of the air pump assembly 17 .

[0094] A plurality of reinforcing ribs 10 are provided on the first side wall. As shown in FIG4 , in this embodiment, the plurality of reinforcing ribs 10 have different extension directions, i.e., the reinforcing ribs 10 extend in parallel with the first direction, extend in perpendicular to the first direction, and form an angle between the extension direction and the first direction. The provision of the plurality of reinforcing ribs 10 can strengthen the strength of the dielectric plate 2 and reduce the probability of deformation of the dielectric plate 2.

[0095] As shown in Figures 5 and 6, the elastic connecting part 6 includes a coaxial fixed connection hand-held part 11 and a first connecting part 12. The diameter of the first connecting part 12 is larger than the diameter of the hand-held part 11. During installation, the elastic connecting part 6 passes through the second mounting hole 25 and the first mounting hole 24 in sequence. Specifically, the hand-held part 11 first passes through the second mounting hole 25 and the first mounting hole 24, and then the second mounting hole 25 and the first mounting hole 24 are sleeved on the outer wall of the first connecting part 12.

[0096] Optionally, two clamping grooves 13 are provided on the circumferential outer wall of the first connecting portion 12 along the axial direction thereof, and the two clamping grooves 13 are respectively configured to clamp the first mounting portion 1 and the second mounting portion 3 .

[0097] Optionally, a limiting portion 14 is provided at one end of the first connecting portion 12 close to the dielectric plate 2 , and the limiting portion 14 abuts against the first side wall to limit the elastic connecting portion 6 .

[0098] Optionally, the outer wall of one end of the first connecting portion 12 close to the hand-held portion 11 is configured to be in a frustum shape, and its diameter gradually decreases as it approaches the hand-held portion 11 until it becomes the same diameter as that of the hand-held portion 11 .

[0099] Optionally, after the medium plate 2 is connected to the housing via the elastic connecting portion 6 , the handle portion 11 is cut off.

[0100] Optionally, one end of the elastic connecting portion 6 is a penetration end 26, and the other end is a limiting end 31. The penetration end 26 passes through the first mounting portion 1 and the second mounting portion 3 from the inside of the shell along the first direction; the limiting end 31 is provided with a limiting portion 14, and the limiting portion 14 abuts against the inner wall of the shell.

[0101] Optionally, the elastic connecting portion 6 is an elastic rivet, and the outer wall of the elastic rivet is provided with two annular grooves 29, which are respectively close to the penetration end 26 and the limiting end 31, and are respectively configured to clamp and position the first mounting hole 24 and the second mounting hole 25.

[0102] Optionally, the first mounting portion 1 includes a recessed groove 27 , which is provided on the inner wall of the shell. The recessed groove 27 opens toward the interior of the shell, and one end thereof away from the opening protrudes from the outer wall of the shell along a first direction. A first mounting hole 24 is provided through the recessed groove 27 .

[0103] Optionally, the penetration end 26 passes through the first mounting hole 24 and the second mounting hole 25 in sequence along the first direction, and the limiting portion and the sinking groove 27 are adapted to each other.

[0104] Optionally, a protrusion 30 is provided on the side wall of the limiting portion 14 away from the penetration end, and the protrusion 30 is configured to buffer the collision of the air pump body 171 .

[0105] Optionally, the second mounting portion 3 includes a clearance groove 28 , the opening of the clearance groove 28 faces the housing, and one end thereof away from the housing protrudes from the side wall of the dielectric plate 2 away from the housing, and a second mounting hole 25 is formed through the clearance groove 28 .

[0106] As shown in Figure 7, the shell includes a first shell 15 and a second shell 16 that are detachably connected and have openings facing each other. The first shell 15 and the second shell 16 are spliced ​​together to form the shell. A accommodating space is formed between the first shell 15 and the second shell 16, and the accommodating space is configured to accommodate an air pump assembly 17; the first shell 15 is provided with at least one first mounting portion 1, and / or the second shell 16 is provided with at least one first mounting portion 1.

[0107] In this embodiment, the first mounting portion 1 is disposed on a side wall of the first housing 15 close to the dielectric plate 2 .

[0108] Optionally, the first housing 15 and the second housing 16 are engaged with each other. The first housing 15 and the second housing 16 are in a buckled structure along the first direction, and a buckle 19 and a connector 20 are respectively provided at the edges of the first housing 15 and the second housing 16 where they are close to each other.

[0109] Optionally, the first shell 15 and the second shell 16 are a buckled structure along the second direction, and a snap member 19 and a snap connector 20 are respectively provided at the edges of the first shell 15 and the second shell 16 where they are close to each other; the second direction is perpendicular to the first direction.

[0110] Specifically, the edges of the first and second housings 15, 16 are engaged with each other via a snap assembly, forming a receiving space between the first and second housings 15, 16. The air pump assembly 17 is disposed within the receiving space. The housings also include an electrical connection assembly receiving cavity 22, which is configured to accommodate the electrical connector 18 of the air pump assembly 17. Specifically, the first housing 15 and / or the second housing 16 are provided with the electrical connection assembly receiving cavity 22, which is configured to accommodate the electrical connector 18 of the air pump assembly.

[0111] The snap assembly includes a snap member 19 arranged on the edge of the first shell 15 and a snap connector 20 arranged on the edge of the second shell 16. The snap member 19 is provided with a clamping space adapted to the snap connector 20. By aligning the edges of the first shell 15 and the second shell 16 and pressing them against each other, the snap member 19 can clamp the snap connector 20, thereby completing the assembly of the shell.

[0112] It should be noted that the first housing 15 and the second housing 16 may be a left-right split structure as shown in FIG. 2 , or an upper-lower split structure as shown in FIG. 8 .

[0113] This embodiment also provides an air pump system including an air pump component 17 and a shock-absorbing air pump housing structure, wherein the air pump component 17 is disposed in the housing.

[0114] Please refer to Figures 2, 7 and 8. This embodiment also provides a car seat, which includes an air pump housing structure, an air pump assembly 17 and a support structure 21. The air pump assembly 17 is arranged in the shell, and the medium plate 2 is connected to the support structure 21 through a fixing part 4.

[0115] Optionally, the car seat further includes a seat body, and a support structure 21 is provided inside the seat body.

[0116] Optionally, the support structure 21 is provided with a second connection hole, and the fixing member 5 sequentially passes through the second connection hole and the second connection portion of the dielectric plate 2 to mount the dielectric plate 3 on the support structure 21 ; the fixing member 5 is made of elastic material and is configured to buffer vibration.

[0117] Optionally, at least one positioning portion 8 is further provided on the side wall of the dielectric plate 2 away from the housing, and a positioning hole is provided on the support structure 21 corresponding to the positioning portion 8. The positioning portion 8 extends into the positioning hole to locate the installation position of the housing.

[0118] This embodiment also provides a car, including the above-mentioned car seat and a car body, wherein the car seat is arranged in the car body.

[0119] Working principle: During installation, first install the air pump assembly 17 into the accommodating space, then align the edges of the first shell 15 and the second shell 16, and splice the first shell 15 and the second shell 16 into a shell through the snap assembly. Then, the elastic connecting part 6 is passed through the second mounting hole 25 and the first mounting hole 24 in sequence to connect the medium plate 2 and the shell. At this time, the first mounting part 1 and the second mounting part 3 are respectively located in the two clamping grooves 13, and the hand-held part 11 is removed.

[0120] Optionally, according to the position where the air pump assembly 17 needs to be installed, the protrusion 9 on the positioning portion 8 is passed through the positioning hole of the support structure 21, the first fixing hole 23 is aligned with the second fixing hole, and the fixing member 5 is passed through the second fixing hole and screwed into the first fixing hole 23. At this point, the air pump assembly 17 is installed on the support structure 21;

[0121] The elastic connection part 6 uses its elastic material to reduce the vibration of the air pump assembly 17 from being transmitted through the shell to the dielectric plate 2 and then to the support structure 21. The method of connecting the support structure 21 with the dielectric plate 2 is more stable than directly fixing it on the support structure 21 with the elastic connection part 6. It is not easy to shift or bump to produce abnormal noise, and can be assembled on a skeleton that is not suitable for installing the elastic connection part 6. For example, the shape of the hole on the support structure 21 is not suitable for installing the elastic connection part 6, or the hole on the support structure 21 has burrs that can easily scratch the elastic connection part 6.

[0122] Optionally, the air pump assembly 17 includes an air pump body 171 and an electrical connector 18. When installing the air pump assembly 17 into the accommodating space, the electrical connector 18 is installed in the electrical connection assembly accommodating cavity 22 to improve the integration of the air pump assembly 17 and facilitate the connection between the electrical connector 18 and the external connector.

[0123] Referring to FIG9 , an air pump assembly with a concealed mounting structure includes an air pump body 171 and a housing structure. The housing structure includes a first housing 15 and a second housing 16 that are detachably connected and have opposing openings. A mounting space is defined between the first housing 15 and the second housing 16 to accommodate the air pump body 171. The first housing 15 can be the first outer shell 15 described above, and the second housing can be the second outer shell 16 described above. The housing structure can also be the housing described above.

[0124] Specifically, the first shell 15 and the second shell 16 are connected by a snap-fit ​​structure. As shown in Figure 15, the snap-fit ​​structure includes a snap-fit ​​member 19 arranged on the edge of the first shell 15 and a snap-fit ​​member 20 arranged on the edge of the second shell 16. The snap-fit ​​member 19 is provided with a clamping space adapted to the snap-fit ​​member 20. By aligning the edges of the first shell 15 and the second shell 16 and pressing them against each other, the snap-fit ​​member 19 can clamp the snap-fit ​​member 20, thereby completing the assembly of the shell structure.

[0125] As shown in Figures 13 and 17, optionally, the first shell 15 and the second shell 16 are a snap-on structure along a first direction, and the snap member 19 and the snap connector 20 are respectively arranged at the edges of the first shell 15 and the second shell 16 where they are close to each other. The first direction is the horizontal direction in Figure 14.

[0126] Alternatively, the first shell 15 and the second shell 16 are a snap-on structure along the second direction, and the snap-on member 19 and the snap-on member 20 are respectively arranged at the edges where the first shell 15 and the second shell 16 are close to each other. The second direction is the vertical direction in Figure 17, and the second direction is perpendicular to the first direction.

[0127] As shown in FIG9 , FIG10 , FIG13 and FIG14 , the medium plate 2 is provided on one side of the shell structure and is configured to be connected to the car seat. The medium plate 2 and the shell structure are connected via an elastic connection portion 6 .

[0128] The elastic connecting part 6 is made of elastic material, specifically an elastic rivet, one end of which is the insertion end 26, and the other end is the limiting end 31. The diameter of the insertion end 26 gradually decreases in the direction away from the limiting end 31. The limiting end 31 is provided with a limiting part 14, and the diameter of the limiting part 14 is larger than the insertion end 26.

[0129] The housing structure is provided with two first mounting portions 1. As shown in Figure 11, the two first mounting portions 1 are arranged along the second direction on the housing structure. A second mounting portion 3 is provided on the dielectric plate 2 corresponding to the first mounting portion 1. An elastic connecting portion 6 sequentially penetrates the first mounting portion 1 and the second mounting portion 3 to mount the dielectric plate 2 on the first housing 15. Optionally, the first housing 15 is provided with at least one first mounting portion 1, and / or the second housing 16 is provided with at least one first mounting portion 1.

[0130] Specifically, as shown in Figures 1, 4 and 9, the first mounting portion 1 includes a recessed groove 27, which is provided on the inner wall of the housing structure. The recessed groove 27 opens toward the interior of the housing structure, and one end thereof, away from the opening, protrudes from the outer wall of the housing structure along a first direction. A first mounting hole 24 is formed through the recessed groove 27.

[0131] When the first shell 15 and the second shell 16 are a snap-fit ​​structure along the first direction, the first mounting portion 1 is arranged on the side wall of the first shell 15 away from the second shell 16. When the first shell 15 and the second shell 16 are a snap-fit ​​structure along the second direction, the first mounting portion 1 is arranged on the side wall of the first shell 15 and the second shell 16 on the same side.

[0132] Optionally, as shown in Figures 9, 14, and 15, the second mounting portion 3 includes a clearance groove 28, the clearance groove 28 opening toward the housing structure, and a first end thereof away from the housing structure protruding along the first direction from the side wall of the dielectric plate 2 away from the housing structure. A second mounting hole 25 is formed through the clearance groove 28, and the insertion end 26 of the elastic connecting portion 6 sequentially penetrates the first mounting hole 24 and the second mounting hole 25 from the inside of the housing structure along the first direction, thereby connecting the dielectric plate 3 and the housing structure, and the limiting portion 14 and the sinking groove 27 are adapted to each other.

[0133] Optionally, two annular grooves 29 are formed on the outer wall of the elastic connecting portion 6 , and the two annular grooves 29 are respectively close to the penetration end 26 and the limiting end 31 , and are respectively configured to engage and position the first mounting hole 24 and the second mounting hole 25 ;

[0134] After the elastic connection portion 6 passes through the first mounting hole 24 and the second mounting hole 25 in sequence along the first direction from the inside of the housing structure, the two annular grooves 29 can respectively engage and position the inner edges of the first mounting hole 24 and the second mounting hole 25 to ensure a tight connection between the dielectric plate 2 and the housing structure. The limiting portion 14 is located in the recessed groove 27, and the portion between the two annular grooves 29 on the elastic connection portion 6 is located in the clearance groove 28. This can maximize the concealment of the elastic connection portion 6, eliminating the space occupied by the elastic connection portion 6 and ensuring a neat appearance.

[0135] It should be noted that, as shown in FIG10 , the two second mounting portions 3 are respectively provided on the dielectric plate 2 , close to the top and bottom of the dielectric plate 2 , and located in the middle.

[0136] It should be noted that a protrusion 30 is provided on the side wall of the limiting portion 14 away from the penetration end 26. Since the elastic connecting portion 6 is made of elastic material, when the air pump structure generates vibration and collision during operation, the protrusion 30 contacts the air pump structure to buffer the vibration and collision, thereby avoiding damage to the air pump structure.

[0137] It should be noted that, as shown in FIG13 , a plurality of reinforcing ribs 10 are provided on the side wall of the dielectric plate 2 away from the first housing 15 , which are configured to enhance the structural strength of the dielectric plate 2 and prevent the dielectric plate 2 from being deformed by stress.

[0138] As shown in FIG15 , the air pump structure includes an air pump body 171 and an electrical connection assembly. The electrical connection assembly is configured to electrically connect the air pump body 171 to the control module. The electrical connection assembly includes a connector 18. The housing structure is provided with a cavity configured to provide a receiving space capable of accommodating the connector 18. The connector 18 is electrically connected to the air pump body 171. The air pump structure herein may be the aforementioned air pump assembly 17, and the connector 18 may be the aforementioned electrical connector 18.

[0139] It should be noted that the end of the penetration end 26 on the elastic connecting part 6 away from the limiting end 31 is connected to the hand-holding part 11. During installation, the hand-holding part 11 first passes through the first mounting hole 24 and the second mounting hole 25. After the two annular grooves 29 are respectively engaged and positioned in the first mounting hole 24 and the second mounting hole 25, the hand-holding part 11 is cut off.

[0140] As shown in Figures 14, 16, and 17, a car seat includes the above-mentioned air pump assembly with a concealed mounting structure and a seat body. The air pump assembly with a concealed mounting structure is arranged on the seat body. Specifically, a support structure 21 is arranged inside the seat body, and the air pump assembly with a concealed mounting structure is connected to the support structure 21. The support structure 21 can be the seat frame 21 of the car or the seat back panel. In this embodiment, the support structure 21 is the seat frame 21, and the seat frame 21 is arranged inside the seat body.

[0141] The dielectric plate 2 is provided with three second connecting portions configured to connect to the seat frame. As shown in Figure 10, the axis connecting the three second connecting portions forms an isosceles triangle. This structure increases strength and prevents deformation of the dielectric plate 2. Each of the three second connecting portions is provided with a first connecting hole 23. The first connecting hole 23 here can be the first fixing hole 23 described above.

[0142] The seat frame 21 is provided with a second connection hole corresponding to the first fixing hole 23. The dielectric panel 2 can be mounted on the seat frame 21 by sequentially inserting a connector 5 through the second connection hole and the first connection hole 23. The connector 12 can be, for example, an elastic rivet, as shown in Figures 16 and 17. The elastic rivet connection can further cushion vibrations, thereby providing secondary shock absorption. In other embodiments, the connector 12 can be a hook, a tether, or other structures. The connector 5 here can be the aforementioned fixing member 5.

[0143] As shown in Figure 13, two positioning parts 8 are provided on the side wall of the medium plate 2 away from the first shell 15, and positioning holes are provided on the seat frame 21 corresponding to the positioning parts 8. By installing the positioning parts 8 into the positioning holes, the installation position of the medium plate 2 can be positioned, thereby positioning the position of the air pump structure, and the medium plate 2 can be stably connected to the seat frame 21, and the displacement of the medium plate 2 causing the displacement of the air pump structure can be avoided.

[0144] Working principle: During installation, the shell structure is split. First, the elastic connecting part 6 is installed into the shell structure, so that the hand-held part 11 first passes through the first mounting hole 24. Then, by pushing the limit end 31 or pulling the hand-held part 11, the elastic connecting part 6 can continue to move in the first mounting hole 24 until the limit part 14 is located in the sink 27, and one of the annular grooves 29 is engaged to position the first mounting hole 24. Then, the air pump body 171 and the connector 18 are respectively installed into the installation space and the cavity inside the shell structure, and then the first shell 15 and the second shell 16 are snap-connected, and then the hand-held part 11 is passed through the second mounting hole 25, and another annular groove 29 is engaged to position the second mounting hole 25. Then, the hand-held part 11 is cut off. At this point, the connection between the medium plate 2 and the shell structure is completed.

[0145] The positioning portion 8 on the dielectric plate 2 is then inserted into the positioning hole of the seat frame to secure the air pump's installation position. The dielectric plate 2 is then installed on the seat frame 21 by sequentially inserting the connector 5 through the second connection hole on the seat frame and the first connection hole 23 on the dielectric plate 2. This completes the installation of the air pump structure, the housing structure, and the dielectric plate 2. The elastic connector 6 is now obscured, eliminating the need for installation space and ensuring a neat overall structural appearance. The air pump and air pump structure herein may be the aforementioned air pump assembly 17.

[0146] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application. Industrial Applicability

[0147] In summary, the embodiments of the present application provide a shock-absorbing air pump housing structure, an air pump assembly with a concealed mounting structure, a car seat, and a car. The air pump housing structure can reduce the effect of the air pump vibration being transmitted from the housing to the dielectric plate, and then from the dielectric plate to the car seat, thereby reducing noise and vibration and improving the comfort of the driver and passengers.

Claims

1. A shock-absorbing air pump housing structure, characterized in that, The air pump housing structure is installed on the support structure (21) inside the vehicle seat, and the air pump housing structure includes: A housing, on the surface of which there is provided at least one first mounting portion (1); A dielectric plate (2), the dielectric plate (2) having a first side wall and a second side wall arranged opposite to each other, the first side wall being close to the support structure (21), and the second side wall being close to the housing; A second mounting portion (3) is provided on the dielectric plate (2) corresponding to the first mounting portion (1); the first mounting portion (1) is connected to the second mounting portion (3) to realize the connection between the housing and the dielectric plate (2); at least one fixing portion (4) is further provided on the dielectric plate (2), and the dielectric plate (2) is connected to the support structure (21) through the fixing portion (4); An elastic connection portion (6), the elastic connection portion (6) being made of an elastic material, and the elastic connection portion (6) being configured to connect the first mounting portion (1) and the second mounting portion (3).

2. The air pump housing structure capable of shock absorption according to claim 1, wherein The fixing portion (4) includes a fixing member (5), and a first fixing hole (23) is provided on the fixing portion (4), and the fixing member (5) penetrates through the first fixing hole (23) and is configured to connect the dielectric plate (2) and the support structure (21); The fixing member (5) is a screw, a plastic fixing nail or a rubber pull nail.

3. A shock-absorbing air pump housing structure according to claim 1 or 2, characterized in that, A first mounting hole (24) is penetrated and opened on the first mounting portion (1), a second mounting hole (25) is penetrated and opened on the second mounting portion (3), and the elastic connection portion (6) sequentially penetrates through the second mounting hole (25) and the first mounting hole (24) to connect the first mounting portion (1) and the second mounting portion (3).

4. The structure of an air pump housing capable of shock absorption according to claim 3, characterized in that, The elastic connection portion (6) is a shock-absorbing pull nail, the shock-absorbing pull nail includes a hand-held portion (11) and a first connection portion (12) fixedly connected coaxially, and the diameter of the first connection portion (12) is larger than the diameter of the hand-held portion (11). Two clamping grooves (13) are arranged on the outer wall of the first connection portion (12) along its axial direction, and the two clamping grooves (13) are respectively configured to clamp the first mounting portion (1) and the second mounting portion (3); A limiting portion (14) is provided at one end of the first connection portion (12) close to the dielectric plate (2), and the limiting portion (14) abuts against the first side wall and is configured to limit the shock-absorbing pull nail.

5. The structure of an air pump housing capable of shock absorption according to claim 3, wherein, One end of the elastic connection portion (6) is a penetrating end (26), and the other end is a limiting end (31). The penetrating end (26) penetrates through the first mounting portion (1) along a first direction from the inside of the housing and penetrates through the second mounting portion (3); the limiting end (31) is provided with a limiting portion (14), and the limiting portion (14) abuts against the inner wall of the housing; A protrusion (30) is provided on the side wall of the limiting portion (14) away from the penetrating end (26), and the protrusion (30) is configured to buffer the collision of the air pump assembly (17).

6. The air pump housing structure capable of shock absorption according to claim 5, characterized in that, The elastic connection part (6) is an elastic rivet. Two annular grooves (29) are provided on the outer wall of the elastic rivet. The two annular grooves (29) are respectively close to the penetration end (26) and the limiting end (31), and are respectively configured to be clamped and positioned with the first mounting hole (24) and the second mounting hole (25).

7. The structure of the air pump housing capable of shock absorption according to claim 6, characterized in that, The first mounting part (1) includes a counterbore (27). The counterbore (27) is opened on the inner wall of the housing. The opening of the counterbore (27) faces the inside of the housing. One end of the counterbore (27) away from the opening protrudes from the outer wall of the housing along the first direction. The first mounting hole (24) is penetratedly opened on the counterbore (27); The penetration end (26) sequentially penetrates through the first mounting hole (24) and the second mounting hole (25) along the first direction, and the limiting part (14) is adapted to the counterbore (27).

8. A shock-absorbing air pump housing structure according to any one of claims 3-7, characterized in that, The second mounting part (3) includes a relief groove (28). The opening of the relief groove (28) faces the housing, and one end of the relief groove (28) away from the housing protrudes from the side wall of the dielectric plate (2) away from the housing. The second mounting hole (25) is penetratedly opened on the relief groove (28).

9. A shock-absorbing air pump housing structure according to any one of claims 1-8, characterized in that, The housing includes a first housing (15) and a second housing (16) which are detachably connected and have opposite openings. The first housing (15) and the second housing (16) are clamped to each other. An accommodation space is formed between the first housing (15) and the second housing (16), and the accommodation space is configured to accommodate the air pump assembly (17); at least one of the first mounting parts (1) is provided on the first housing (15), and / or at least one of the first mounting parts (1) is provided on the second housing (16); The first housing (15) and the second housing (16) are of a left-right split structure or an up-down split structure; The first housing (15) is provided with an electrical connection component accommodation cavity (22), and / or the second housing (16) is provided with an electrical connection component accommodation cavity (22); the electrical connection component accommodation cavity (22) is configured to accommodate the electrical connector (18) of the air pump assembly.

10. A shock-absorbing air pump housing structure according to claim 9, characterized in that, The first housing (15) and the second housing (16) are of a snap-together structure along the first direction. Snap members (19) and clamping members (20) are respectively provided at the edges of the first housing (15) and the second housing (16) close to each other; Or the first housing (15) and the second housing (16) are of a snap-together structure along the second direction. The snap members (19) and the clamping members (20) are respectively provided at the edges of the first housing (15) and the second housing (16) close to each other; the second direction is perpendicular to the first direction.

11. A shock-absorbing air pump housing structure according to any one of claims 1-10, characterized in that, At least one positioning part (8) is further provided on the first side wall. A protruding part (9) protrudes along a direction away from the dielectric plate (2) at one end of the positioning part (8) away from the dielectric plate (2). The protruding part (9) is configured to match with a positioning hole provided corresponding to the positioning part (8) on the support structure (21) to position the installation position of the dielectric plate (2).

12. An automotive seat, characterized in that, It includes an air pump housing structure capable of shock absorption, an air pump assembly (17), and a seat body as described in any one of claims 1-11; a support structure (21) is provided inside the seat body; the air pump assembly (17) is arranged inside the housing, and the medium plate (2) is connected to the support structure (21) through the fixing part (4); The support structure (21) is provided with a second connection hole, and a fixing member (5) passes through the second connection hole and the second connection part of the medium plate in sequence to mount the medium plate (2) on the support structure (21); the fixing member (5) is made of an elastic material and is configured to buffer vibrations; At least one positioning part (8) is further provided on the side wall of the medium plate (2) away from the housing, a positioning hole is provided on the support structure (21) corresponding to the positioning part (8), and the positioning part (8) extends into the positioning hole, which is configured to position the installation position of the housing; And / or, a plurality of reinforcing ribs (10) are provided on the first side wall of the medium plate (2), which are configured to enhance the strength of the medium plate (2).

13. An air pump assembly with a concealed installation structure, characterized in that, It includes: An air pump body (171); A housing structure, the housing structure includes a first housing (15) and a second housing (16) that are detachably connected and have opposite openings, and there is an installation space capable of accommodating the air pump body (171) between the first housing (15) and the second housing (16); at least one first installation part (1) is provided on the housing structure; A medium plate (2), a second installation part (3) is provided on the medium plate (2) corresponding to the first installation part (1), and at least one connection part is provided on the medium plate (2), which is configured to be connected to the seat frame (21); An elastic connection part (6), one end of the elastic connection part (6) is a penetrating end (26), and the other end is a limiting end (31). The penetrating end (26) penetrates through the first installation part (1) and the second installation part (3) along a first direction from the inside of the housing structure, and a limiting part (14) is provided on the limiting end (31), and the limiting part (14) abuts against the inner wall of the housing structure; A protrusion (30) is provided on the side wall of the limiting part (14) away from the penetrating end (26), and the protrusion (30) is configured to buffer the collision of the air pump structure.

14. The air pump assembly with a concealed installation structure according to claim 13, characterized in that, The first installation part (1) includes a sinking groove (27), the sinking groove (27) is opened on the inner wall of the housing structure, the opening of the sinking groove (27) faces the inside of the housing structure, and the end of the sinking groove (27) away from the opening protrudes from the outer wall of the housing structure along the first direction, and a first installation hole (24) is penetrated through the sinking groove (27); The second installation part (3) includes a relief groove (28), the opening of the relief groove (28) faces the housing structure, and the end of the relief groove (28) away from the housing structure protrudes from the side wall of the medium plate (2) away from the housing structure, and a second installation hole (25) is penetrated through the relief groove (28); The insertion end (26) sequentially penetrates through the first mounting hole (24) and the second mounting hole (25) along the first direction, and the limiting portion (14) is adapted to the sinking groove (27).

15. A gas pump assembly with a concealed installation structure according to claim 14, characterized in that, The elastic connection portion (6) is an elastic rivet. Two annular grooves (29) are provided on the outer wall of the elastic rivet. The two annular grooves (29) are respectively close to the insertion end (26) and the limiting end (31), and are respectively configured to be clamped and positioned with the first mounting hole (24) and the second mounting hole (25).

16. A gas pump assembly with a concealed installation structure according to any one of claims 13-15, characterized in that, The first housing (15) and the second housing (16) are a snap-fastening structure along the first direction. Snap-fastening members (19) and clamping members (20) are respectively provided at the edges of the first housing (15) and the second housing (16) close to each other; or the first housing (15) and the second housing (16) are a snap-fastening structure along the second direction. The snap-fastening members (19) and the clamping members (20) are respectively provided at the edges of the first housing (15) and the second housing (16) close to each other; the second direction is perpendicular to the first direction.

17. An automotive seat, characterized in that, Comprising an air pump assembly with a concealed installation structure and a seat body according to any one of claims 13-16, a seat frame (21) is arranged inside the seat body, and the air pump assembly with the concealed installation structure is arranged on the seat frame (21); A second connection hole is provided on the seat frame (21) corresponding to the second connection portion of the dielectric plate. A connecting member (5) sequentially penetrates through the second connection hole and the second connection portion to mount the dielectric plate (2) on the seat frame (21); the connecting member (5) is made of an elastic material and is configured to buffer vibrations; And / or, at least one positioning portion (8) is further provided on the side wall of the dielectric plate (2) away from the first housing (15). A positioning hole is provided on the seat frame (21) corresponding to the positioning portion (8). The positioning portion (8) extends into the positioning hole and is configured to position the installation position of the housing structure.

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