Plastic shell type circuit breaker with safety arc extinguishing device

Abstract

The utility model belongs to the technical field of circuit breakers, and particularly relates to a plastic shell type circuit breaker with a safety arc extinguishing device. Comprising a plurality of arc-extinguishing devices, and each arc-extinguishing device comprises an arc-extinguishing cover assembly; the plurality of arc extinguishing sheets are arranged in the arc extinguishing cavity; the insulating heat dissipation plate is located above the arc extinguishing sheets, and a plurality of first heat dissipation holes are formed in the insulating heat dissipation plate; the first blowout prevention plate is located above the insulating heat dissipation plate, and a plurality of heat dissipation blowout prevention seams are formed in the first blowout prevention plate; the second blowout prevention plate is located between the insulating heat dissipation plate and the first blowout prevention plate, and a plurality of second heat dissipation holes are formed in the second blowout prevention plate; an elastic cover plate is formed through the heat dissipation blowout prevention seam; the insulating heat dissipation plate, the second blowout prevention plate and the first blowout prevention plate are sequentially arranged in the arc extinguishing cover assembly, so that on the premise that high-temperature gas generated by the electric arc is sequentially discharged from the first heat dissipation holes, the second heat dissipation holes and the heat dissipation blowout prevention seams, high-temperature particles generated by the electric arc can be prevented from being ejected out from the heat dissipation blowout prevention seams.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit breakers, and particularly relates to a plastic case circuit breaker with a safety arc extinguishing device. Background Art

[0002] A circuit breaker refers to a switching device that can close, carry, and interrupt the current under normal circuit conditions and can also close, carry, and interrupt the current under abnormal circuit conditions within a specified time. Since an arc is generated when the circuit breaker is disconnected, and the arc will generate high-temperature gas, which is not conducive to the service life of the circuit breaker. Therefore, a heat dissipation plate is provided on the circuit breaker, and the heat generated by the arc is dissipated through a plurality of heat dissipation holes on the heat dissipation plate.

[0003] In the prior art, in order to dissipate heat from the circuit breaker, a heat dissipation plate for dissipating the high-temperature gas generated by the arc extinguishing device is provided on the outer casing, and a plurality of heat dissipation holes are formed in the heat dissipation plate. Since the high temperature generated by the arc will melt the metal arc extinguishing piece and generate high-temperature metal particles, the high-temperature metal particles will be ejected from the heat dissipation holes of the heat dissipation plate. When the operator manually controls the disconnection of the circuit breaker, the high-temperature metal particles generated by the arc are likely to scald the operator, posing a safety hazard. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a plastic case circuit breaker with a safety arc extinguishing device for the above-mentioned existing technical problems. By sequentially arranging an insulating heat dissipation plate, a second anti-spray plate, and a first anti-spray plate in the arc extinguishing cover assembly, on the premise that the high-temperature gas generated by the arc can be discharged from the first heat dissipation holes, the second heat dissipation holes, and the heat dissipation anti-spray seams in sequence, it is also possible to prevent the high-temperature particles generated by the arc from being ejected from the heat dissipation anti-spray seams.

[0005] In view of this, the utility model provides a plastic case circuit breaker with a safety arc extinguishing device, which includes a housing body and an operating device, a contact device, a tripping device, and an arc extinguishing device installed in the housing body. The arc extinguishing device includes:

[0006] An arc extinguishing cover assembly, including two cover bodies that face each other and are connected to each other, and an arc extinguishing chamber is formed between the two cover bodies;

[0007] A plurality of arc extinguishing pieces, arranged in the arc extinguishing chamber;

[0008] An insulating heat dissipation plate, arranged in the arc extinguishing chamber, and the insulating heat dissipation plate is located above the plurality of arc extinguishing pieces, and a plurality of first heat dissipation holes are formed in the insulating heat dissipation plate;

[0009] A first anti-spray plate, arranged in the arc extinguishing chamber, and the first anti-spray plate is located above the insulating heat dissipation plate, and a plurality of heat dissipation anti-spray seams are arranged on the first anti-spray plate;

[0010] The second anti-spray plate is disposed in the arc extinguishing chamber, and the second anti-spray plate is located between the insulating heat dissipation plate and the first anti-spray plate. A plurality of second heat dissipation holes are provided on the second anti-spray plate;

[0011] Wherein, the first heat dissipation hole, the second heat dissipation hole and the heat dissipation anti-spray seam are communicated in sequence from bottom to top. The heat dissipation anti-spray seam is a non-closed annular structure, and an elastic cover plate is formed through the heat dissipation anti-spray seam. Heat dissipation cavities are provided between the insulating heat dissipation plate and the second anti-spray plate and between the second anti-spray plate and the first anti-spray plate. A heat dissipation window is provided on the outer shell body, and the first anti-spray plate is facing the heat dissipation window.

[0012] In the above solution, further, both ends of the heat dissipation anti-spray seam are provided with extension seams, and an extension part is formed between the two extension seams. The width L1 of the elastic cover plate is greater than the width L2 of the extension part.

[0013] In the above solution, further, a first insertion slot is provided at the top of the cover body, and the first insertion slots on the two cover bodies are communicated with each other. The first anti-spray plate is inserted into the first insertion slot.

[0014] In the above solution, further, a second insertion slot and a third insertion slot are arranged in sequence from top to bottom in the cover body. The second insertion slots on the two cover bodies are communicated with each other, and the third insertion slots on the two cover bodies are communicated with each other. The second anti-spray plate is inserted into the second insertion slot, and the insulating heat dissipation plate is inserted into the third insertion slot.

[0015] In the above solution, further, it further includes:

[0016] The mounting seat assembly includes two limit mounting seats, and the two limit mounting seats are respectively disposed in the two cover bodies;

[0017] Wherein, the arc extinguishing piece includes two extension feet, and the two extension feet are respectively disposed on the two limit mounting seats. A positioning groove is provided on one side of the cover body in the X-axis direction, and a positioning cavity is formed between the positioning grooves on the two cover bodies. The mounting seat assembly is disposed in the positioning cavity, and the limit mounting seats are disposed in the positioning grooves.

[0018] In the above solution, further, a plurality of fourth insertion slots are arranged at the top of the limit mounting seat, and the two extension feet of the arc extinguishing piece are respectively inserted into the fourth insertion slots on the two limit mounting seats.

[0019] The beneficial effects of the present utility model are:

[0020] 1. By sequentially arranging the insulating heat dissipation plate, the second anti-spray plate and the first anti-spray plate in the arc extinguishing cover assembly, on the premise that the high-temperature gas generated by the arc can be discharged from the first heat dissipation hole, the second heat dissipation hole and the heat dissipation anti-spray seam in sequence, it can also prevent the high-temperature particles generated by the arc from being ejected from the heat dissipation anti-spray seam;

[0021] 2. By installing both ends of the first anti-spray plate into the first insertion slots on the two cover bodies respectively, the installation and fixation of the first anti-spray plate are completed. Without using screws for fixation, the effect of easy installation and disassembly of the first anti-spray plate is achieved;

[0022] 3. By arranging and installing the two extension feet of the arc extinguishing piece on the two limit mounting seats respectively, several arc extinguishing pieces form an integral structure. Then, this integral structure is installed into the positioning cavity formed between the positioning slots on the two cover bodies. Without using screws to fix this integral structure, it is convenient to install, disassemble and replace the arc extinguishing piece. Description of the Drawings

[0023] Figure 1 is the overall structure schematic diagram of the present utility model;

[0024] Figure 2 is the overall structure schematic diagram of the present utility model from another perspective;

[0025] Figure 3 is the cross-sectional structure schematic diagram of the present utility model;

[0026] Figure 4 is the structure schematic diagram of the present utility model excluding the outer housing;

[0027] Figure 5 is the structure schematic diagram of the arc extinguishing device of the present utility model;

[0028] Figure 6 is the exploded structure schematic diagram of the arc extinguishing device of the present utility model;

[0029] Figure 7 is the cross-sectional structure schematic diagram of the arc extinguishing device of the present utility model;

[0030] Figure 8 is the structure schematic diagram of the first anti-spray plate of the present utility model.

[0031] The markings in the figure are represented as:

[0032] 1. Contact device; 2. Arc extinguishing device; 21. Arc extinguishing cover assembly; 211. Cover body; 22. Arc extinguishing piece; 221. Extension foot; 23. Insulating heat dissipation plate; 24. First anti-spray plate; 25. Second anti-spray plate; 3. Arc extinguishing cavity; 4. First heat dissipation hole; 5. Heat dissipation anti-spray seam; 6. Second heat dissipation hole; 7. Elastic cover plate; 8. Heat dissipation cavity; 9. Heat dissipation window; 10. Extension seam; 13. Extension part; 14. First insertion slot; 15. Second insertion slot; 16. Third insertion slot; 17. Fourth insertion slot; 18. Mounting seat assembly; 181. Limit mounting seat; 19. Positioning slot. Detailed Embodiments

[0033] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0034] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments of the present application. For the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant fields may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0035] Embodiment 1:

[0036] This embodiment provides a plastic case circuit breaker with a safety arc extinguishing device, including a housing body and an operating device, a contact device 1, a tripping device, and an arc extinguishing device 2 installed in the housing body. The arc extinguishing device 2 includes:

[0037] An arc extinguishing cover assembly 21, including two cover bodies 211 facing each other and connected to each other. An arc extinguishing chamber 3 is formed between the two cover bodies 211;

[0038] A plurality of arc extinguishing plates 22, arranged in the arc extinguishing chamber 3;

[0039] An insulating heat dissipation plate 23, arranged in the arc extinguishing chamber 3, and the insulating heat dissipation plate 23 is located above the plurality of arc extinguishing plates 22. A plurality of first heat dissipation holes 4 are provided on the insulating heat dissipation plate 23;

[0040] A first anti-spray plate 24, arranged in the arc extinguishing chamber 3, and the first anti-spray plate 24 is located above the insulating heat dissipation plate 23. A plurality of heat dissipation and anti-spray slits 5 are provided on the first anti-spray plate 24;

[0041] A second anti-spray plate 25, arranged in the arc extinguishing chamber 3, and the second anti-spray plate 25 is located between the insulating heat dissipation plate 23 and the first anti-spray plate 24. A plurality of second heat dissipation holes 6 are provided on the second anti-spray plate 25;

[0042] Among them, the first heat dissipation hole 4, the second heat dissipation hole 6 and the heat dissipation anti-spraying seam 5 are connected in sequence from bottom to top, the heat dissipation anti-spraying seam 5 is a non-closed annular structure, and an elastic cover plate 7 is formed by the heat dissipation anti-spraying seam 5, and heat dissipation cavities 8 are provided between the insulating heat dissipation plate 23 and the second spraying prevention plate 25 and between the second spraying prevention plate 25 and the first spraying prevention plate 24. A heat dissipation window 9 is provided on the outer shell, and the first spraying prevention plate 24 is directly opposite to the heat dissipation window 9.

[0043] In the present technical solution, the outer shell can be made of thermoplastic plastic or thermosetting plastic, and the operating device, contact device 1, and tripping device can all be conventional devices used inside the circuit breaker. By pulling the operating device, the contact device 1 can be triggered to be turned on and off, thereby controlling the connection and disconnection between the circuit breaker and the external circuit. The tripping device can drive the operating device to operate in the case of a short circuit, causing the circuit breaker to trip, thereby achieving circuit cutting and circuit protection. The arc extinguishing device 2 is used to extinguish the arc generated when the circuit is cut off.

[0044] The two covers 211 of the arc extinguishing cover assembly 21 of the arc extinguishing device 2 are opposite to each other, and the two covers 211 can be connected by using a plurality of screws. The arc extinguishing cover assembly 21 can be made of insulating and high temperature resistant materials, such as unsaturated polyester bulk molding compound, which has excellent electrical properties, mechanical properties, heat resistance, chemical corrosion resistance, and is suitable for various molding processes, easy to process and manufacture, and can meet the requirements of arc extinguishing cover materials in terms of arc resistance and mechanical strength.

[0045] A plurality of arc extinguishing pieces 22 are arranged in the arc extinguishing chamber 3, and the arc extinguishing pieces 22 may be conventional arc extinguishing pieces 22. The contact device 1 comprises a stationary contact and a moving contact contacting and matching the stationary contact. When the circuit breaker disconnects the circuit, an arc is generated at the moment when the stationary contact is separated from the moving contact. The arc can be extinguished by arranging the plurality of arc extinguishing pieces 22 in the arc extinguishing chamber 3.

[0046] The insulating heat sink 23 is a plate-like structure made of a material with insulating and thermal conductive effects, such as a heat sink made of aluminum nitride. It can conduct heat to the high-temperature gas in the arc extinguishing chamber 3 when an arc is generated, so that the heat is evenly distributed on the insulating heat sink 23, and the high-temperature gas is dissipated from several first heat dissipation holes 4, thereby achieving a heat dissipation effect.

[0047] When an arc is generated, high-temperature gas is generated, and the high temperature also causes the arc extinguishing sheet 22 to melt and generate metal particles that splash out of the circuit breaker. The second spray-proof plate 25 is used to block part of the high-temperature particles sprayed from the first heat dissipation hole 4 when an arc is generated, and the high-temperature gas can also be emitted from the second heat dissipation hole 6.

[0048] The heat dissipation and blowout prevention seam 5 of the second blowout prevention plate 25 is a non-closed annular structure, such as U-shaped, C-shaped, and rectangular. The heat dissipation and blowout prevention seam 5 is a fine slit, and an elastic cover plate 7 is formed through the heat dissipation and blowout prevention seam 5. Therefore, the elastic cover plate 7 has elasticity.

[0049] When an electric arc is generated, the high-temperature gas can erupt along the elastic cover plate 7. Since the elastic cover plate 7 has elasticity, the elastic cover plate 7 can deform according to the air pressure in the arc extinguishing chamber 3. For example, the higher the air pressure, the greater the deformation degree of the elastic cover plate 7, and the larger the opening of the heat dissipation and blowout prevention seam 5. While discharging the high-temperature gas, the elastic cover plate 7 can also prevent the high-temperature particles ejected from the second heat dissipation hole 6 from spraying out of the heat dissipation and blowout prevention seam 5 to the outside.

[0050] In the state without an electric arc, the elastic cover plate 7 is in a closed state, which can prevent dust from falling into the circuit breaker and avoid the dust accumulated inside the circuit breaker from affecting the service life, thereby improving the service life of the circuit breaker.

[0051] In summary, by sequentially arranging the insulating heat dissipation plate 23, the second blowout prevention plate 25, and the first blowout prevention plate 24 in the arc extinguishing cover assembly 21, the high-temperature gas generated by the electric arc can be discharged sequentially from the first heat dissipation hole 4, the second heat dissipation hole 6, and the heat dissipation and blowout prevention seam 5, preventing the temperature in the arc extinguishing chamber 3 from being too high and causing damage to the arc extinguishing cover assembly 21, and also preventing the temperature in the outer casing from being too high, resulting in the internal components aging due to high temperature and shortening the component life. And on the premise of discharging the high-temperature gas generated by the electric arc in the arc extinguishing chamber 3, it can also block the high-temperature particles generated by the electric arc from spraying out of the outer casing, thus avoiding scalding the operator.

[0052] Embodiment 2:

[0053] This embodiment provides a molded case circuit breaker with a safety arc extinguishing device. In addition to including the technical solutions of the above embodiment, it also has the following technical features.

[0054] Both ends of the heat dissipation and blowout prevention seam 5 are provided with extension seams 10, and an extension part 13 is formed between the two extension seams 10. The width L1 of the elastic cover plate 7 is greater than the width L2 of the extension part 13.

[0055] In this technical solution, the width L1 of the elastic cover plate 7 is greater than the width L2 of the extension part 13, which can improve the elasticity of the elastic cover plate 7. When impacted by high-pressure gas, more high-temperature gas can be dissipated, improving the heat dissipation effect.

[0056] Embodiment 3:

[0057] This embodiment provides a molded case circuit breaker with a safety arc extinguishing device. In addition to including the technical solutions of the above embodiment, it also has the following technical features.

[0058] A first inserting groove 14 is disposed on the top of the cover body 211 . The first inserting grooves 14 on the two cover bodies 211 are connected to each other, and the first spray-proof plate 24 is inserted into the first inserting groove 14 .

[0059] In the present technical solution, when installing the first spray-proof plate 24, firstly, one end of the first spray-proof plate 24 is inserted into one of the first insertion grooves 14, and then the first insertion groove 14 on the other cover body 211 is aligned with the other end of the first spray-proof plate 24 and inserted, thereby completing the installation and fixation of the first spray-proof plate 24, without the need to use screws to fix it, so as to achieve the effect of easy installation and removal of the first spray-proof plate 24.

[0060] Furthermore, the cover body 211 is provided with a second plug-in slot 15 and a third plug-in slot 16 arranged in sequence from top to bottom, the second plug-in slots 15 on the two cover bodies 211 are connected to each other, the third plug-in slots 16 on the two cover bodies 211 are connected to each other, the second spray-proof plate 25 is inserted in the second plug-in slot 15, and the insulating heat dissipation plate 23 is inserted in the third plug-in slot 16.

[0061] In the present technical solution, when installing the second spray-proof plate 25, firstly, one end of the second spray-proof plate 25 is inserted into one of the second insertion grooves 15, and then the second insertion groove 15 on the other cover body 211 is aligned with the other end of the second spray-proof plate 25 and inserted, thereby completing the installation and fixation of the second spray-proof plate 25, without the need to use screws to fix it, so as to achieve the effect of easy installation and removal of the second spray-proof plate 25.

[0062] The steps of installing the insulating heat dissipation plate 23 into the third plug-in slot 16 are similar, so that the insulating heat dissipation plate 23 can be easily installed and removed.

[0063] Embodiment 4:

[0064] This embodiment provides a plastic case circuit breaker with a safety arc extinguishing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0065] Also includes:

[0066] The mounting seat assembly 18 includes two position-limiting mounting seats 181, and the two position-limiting mounting seats 181 are respectively arranged in two cover bodies 211;

[0067] Among them, the arc extinguishing piece 22 includes two extension feet 221, and the two extension feet 221 are respectively arranged on two limit mounting seats 181. A positioning groove 19 is arranged on one side of the X-axis of the cover body 211. A positioning cavity is formed between the positioning grooves 19 on the two cover bodies 211. The mounting seat assembly 18 is arranged in the positioning cavity, and the limit mounting seat 181 is arranged in the positioning groove 19.

[0068] In this technical solution, two limiting mounting seats 181 are symmetrically arranged in the arc extinguishing chamber 3. By respectively arranging the two extension feet 221 of the arc extinguishing piece 22 on the two limiting mounting seats 181, a plurality of arc extinguishing pieces 22 form an integral structure, and then this integral structure is installed into the positioning cavity formed between the positioning grooves 19 on the two cover bodies 211, without using screws to fix this integral structure, which is convenient for installing, disassembling and replacing the arc extinguishing piece 22.

[0069] Further, a plurality of fourth insertion slots 17 are arranged in a row at the top of the limiting mounting seat 181, and the two extension feet 221 of the arc extinguishing piece 22 are respectively inserted into the fourth insertion slots 17 on the two limiting mounting seats 181.

[0070] In this technical solution, by respectively inserting the two extension feet 221 of the arc extinguishing piece 22 into the fourth insertion slots 17 on the two limiting mounting seats 181, the effect of convenient installation is achieved, and the arc extinguishing piece 22 is not easily detached.

[0071] The embodiments of the present application have been described above with reference to the accompanying drawings. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.

Claims

1. A plastic case circuit breaker with a safety arc extinguishing device, characterized in that, It includes a housing body and an operating device, a contact device (1), a tripping device, and an arc extinguishing device (2) installed inside the housing body. The arc extinguishing device (2) includes: An arc extinguishing cover assembly (21), which includes two cover bodies (211) that face each other and are connected to each other. An arc extinguishing chamber (3) is formed between the two cover bodies (211); A plurality of arc extinguishing plates (22), which are arranged in the arc extinguishing chamber (3); An insulating heat dissipation plate (23), which is arranged in the arc extinguishing chamber (3), and the insulating heat dissipation plate (23) is located above the plurality of arc extinguishing plates (22). A number of first heat dissipation holes (4) are formed on the insulating heat dissipation plate (23); A first anti-spray plate (24), which is arranged in the arc extinguishing chamber (3), and the first anti-spray plate (24) is located above the insulating heat dissipation plate (23). A number of heat dissipation and anti-spray slits (5) are arranged on the first anti-spray plate (24); A second anti-spray plate (25), which is arranged in the arc extinguishing chamber (3), and the second anti-spray plate (25) is located between the insulating heat dissipation plate (23) and the first anti-spray plate (24). A number of second heat dissipation holes (6) are arranged on the second anti-spray plate (25); Among them, the first heat dissipation holes (4), the second heat dissipation holes (6), and the heat dissipation and anti-spray slits (5) are communicated with each other from bottom to top in sequence. The heat dissipation and anti-spray slits (5) are in a non-closed annular structure, and an elastic cover plate (7) is formed through the heat dissipation and anti-spray slits (5). Heat dissipation cavities (8) are arranged between the insulating heat dissipation plate (23) and the second anti-spray plate (25) and between the second anti-spray plate (25) and the first anti-spray plate (24). A heat dissipation window (9) is arranged on the housing body, and the first anti-spray plate (24) is directly opposite to the heat dissipation window (9).

2. The molded case circuit breaker with a safety arc extinguishing device according to claim 1, characterized in that, Both ends of the heat dissipation and anti-spray slits (5) are provided with extension slits (10), and an extension part (13) is formed between the two extension slits (10). The width L1 of the elastic cover plate (7) is greater than the width L2 of the extension part (13).

3. A molded case circuit breaker with a safety arc extinguishing device according to claim 1, characterized in that, A first insertion slot (14) is arranged at the top of the cover body (211). The first insertion slots (14) on the two cover bodies (211) are communicated with each other, and the first anti-spray plate (24) is inserted into the first insertion slot (14).

4. A molded case circuit breaker with a safety arc extinguishing device according to claim 3, characterized in that, A second insertion slot (15) and a third insertion slot (16) are arranged in the cover body (211) in sequence from top to bottom. The second insertion slots (15) on the two cover bodies (211) are communicated with each other, and the third insertion slots (16) on the two cover bodies (211) are communicated with each other. The second anti-spray plate (25) is inserted into the second insertion slot (15), and the insulating heat dissipation plate (23) is inserted into the third insertion slot (16).

5. A molded case circuit breaker with a safety arc extinguishing device according to claim 1, characterized in that, It further includes: A mounting seat assembly (18), which includes two limit mounting seats (181), and the two limit mounting seats (181) are respectively arranged in the two cover bodies (211); Among them, the arc extinguishing piece (22) includes two extension feet (221), the two extension feet (221) are respectively arranged on two limit mounting seats (181), a positioning groove (19) is arranged on one side of the cover body (211) along the X axis, a positioning cavity is formed between the positioning grooves (19) on the two cover bodies (211), the mounting seat assembly (18) is arranged in the positioning cavity, and the limit mounting seat (181) is arranged in the positioning groove (19).

6. The molded case circuit breaker with a safety arc extinguishing device according to claim 5, characterized in that, A plurality of fourth insertion slots (17) are arranged in a row at the top of the limit mounting seat (181), and the two extension feet (221) of the arc extinguishing piece (22) are respectively inserted into the fourth insertion slots (17) on the two limit mounting seats (181).

Images