A PTC heater fixing assembly and a front wall assembly

Abstract

The utility model relates to the technical field of automotive interior and exterior trim, especially relates to a PTC heater fixing assembly and front wallboard assembly, it includes first support and second support, first support and second support are fixed from upper and lower two ends heater body respectively, first support is fixed on the water channel, second support is fixed on the front crossbeam.

Description

Technical Field

[0001] This utility model relates to the field of automotive interior and exterior trim technology, and in particular to a PTC heater mounting assembly and a front bulkhead assembly. Background Technology

[0002] PTC heaters are widely used in new energy vehicles to heat components or air conditioning systems in the front compartment. Currently, common PTC heaters are fixed to the vehicle interior using mounting brackets. However, due to factors such as sheet metal design, the fixing effect is often poor, resulting in weak impact resistance and high maintenance difficulty. Poor fixing can cause significant shaking of the heater when driving on bumpy roads, which can easily produce abnormal noises and may also lead to collisions with other components, creating safety hazards. Summary of the Invention

[0003] This utility model provides a PTC heater fixing assembly that is not prone to abnormal noise and is easy to maintain. It includes a first bracket and a second bracket. The first bracket and the second bracket fix the heater body from the upper and lower ends, respectively. The first bracket is fixed to the water channel and the second bracket is fixed to the front crossbeam.

[0004] Furthermore, the first bracket includes a first plate, a second plate, and a third plate that are integrally connected. The first plate is fixedly connected to the water channel, and the third plate is fixedly connected to the heater body. The second plate is disposed between the first plate and the third plate in the Z-direction of the vehicle body. The lower end of the first plate is connected to the second plate, and the upper end of the third plate is connected to the second plate. A first pipe clamp is provided at the lower end of the second plate. The first pipe clamp is integrally connected to the second plate and is used to clamp and fix the heater core inlet pipe. A reinforcing rib is provided between the first plate and the second plate.

[0005] Furthermore, the first bracket also includes a first connecting part, which is used to connect and fix with the water tank, and the first connecting part and the water tank are connected and fixed relative to each other through a first buffer connector.

[0006] Furthermore, the first buffer connector includes a first bolt head, a first bolt body, a first buffer pad, and a second buffer pad. The first bolt head is located at one end of the first bolt body away from the water channel. The first buffer pad and the second buffer pad are located at the front and rear ends of the first connection portion, respectively. The first buffer pad is disposed between the first connection portion and the water channel, and the second buffer pad is disposed between the first connection portion and the first bolt head. The first bolt body passes through the first buffer pad, the first connection portion, and the second buffer pad.

[0007] Furthermore, the first bracket also includes a second connecting part, which is used to connect and fix to the heater body. The second connecting part and the heater body are connected by bolts, and the mounting point of the second connecting part and the heater body is located on the side away from the front bulkhead.

[0008] Furthermore, the second bracket includes a fourth plate, a fifth plate, and a sixth plate that are integrally connected. The fourth plate is fixedly connected to the heater body, and the sixth plate is fixedly connected to the front crossbeam. The fifth plate is positioned between the fourth plate and the sixth plate in the Z-direction of the vehicle body. The lower end of the fourth plate is connected to the fifth plate, and the upper end of the sixth plate is connected to the fifth plate. A second pipe clamp is provided at the rear of the sixth plate. The second pipe clamp is integrally connected to the sixth plate and is used to clamp and fix the radiator outlet pipe. A reinforcing rib is provided between the fifth plate and the sixth plate.

[0009] Furthermore, the second bracket also includes a third connecting part, which is used to connect and fix to the heater body. The third connecting part and the heater body are connected by bolts, and the mounting point of the third connecting part and the heater body is located on the side away from the front bulkhead.

[0010] Furthermore, the second bracket also includes a fourth connecting part, which is used to connect and fix with the front crossbeam. The fourth connecting part is disposed on the sixth plate, and the fourth connecting part and the front crossbeam are connected and fixed relative to each other through a second buffer connector.

[0011] Furthermore, the second buffer connector includes a second bolt head, a second bolt body, a third buffer pad, and a fourth buffer pad. The second bolt head is located at one end of the second bolt body away from the front crossbeam. The third buffer pad and the fourth buffer pad are located at the front and rear ends of the fourth connection, respectively. The third buffer pad is disposed between the fourth connection and the front crossbeam and abuts against the fourth connection and the front crossbeam, respectively. The fourth buffer pad abuts against the fourth connection. The second bolt body passes through the front crossbeam, the third buffer pad, the fourth connection, and the fourth buffer pad.

[0012] Furthermore, the present invention also includes a front bulkhead assembly, which includes the aforementioned PTC heater fixing assembly.

[0013] In summary, the PTC heater mounting assembly of this invention firmly fixes the heater body between the water channel and the front crossbeam via the first and second brackets. This creates vibration damping between the water channel and the first bracket, and between the front crossbeam and the second bracket, reducing the risk of abnormal noise caused by the heater body shaking during driving and improving the driving experience. Furthermore, by mounting bolts on the back of the heater body, this invention reduces the difficulty of removing the first and second brackets from the heater body during later maintenance, avoiding the need for workers to remove bolts from the front bulkhead side, effectively reducing labor time and maintenance difficulty. Attached Figure Description

[0014] Figure 1 A schematic diagram of the PTC heater fixing assembly and front panel provided by this utility model.

[0015] Figure 2 This is a schematic diagram of the PTC heater fixing assembly in this utility model.

[0016] Figure 3 This is another schematic diagram of the PTC heater fixing assembly in this utility model.

[0017] Figure 4 This is a schematic diagram of the first buffer connector in this utility model.

[0018] Figure 5 This is a schematic diagram of the second buffer connector in this utility model.

[0019] In the figure: 1. First bracket; 11. First plate; 12. Second plate; 13. Third plate; 14. First buffer connector; 141. First bolt head; 142. First bolt body; 143. First buffer pad; 144. Second buffer pad; 145. First bolt bushing; 15. First pipe clamp; 1a. First connecting part; 1b. Second connecting part; 2. Second bracket; 21. Fourth plate; 22. Fifth plate; 23. Sixth plate; 24. Second buffer connector; 241. Second bolt head; 245. Second bolt bushing; 243. Third buffer pad; 244. Fourth buffer pad; 246. Second nut; 25. Second pipe clamp; 2a. Third connecting part; 2b. Fourth connecting part; 3. Heater body; 41. Reinforcing ribs; 42. Weight-reducing holes; 5. Water trough; 6. Front crossbeam; 7. Front bulkhead; 8. Heater water tank inlet pipe; 9. Secure the radiator outlet pipe. Detailed Implementation

[0020] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the present utility model will be described in detail below with reference to the accompanying drawings and preferred embodiments.

[0021] It should be noted that the terms "first," "second," "third," "fourth," etc., in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0022] Please see Figures 1 to 3 The PTC heater mounting assembly of this invention is located on the front bulkhead 7 and includes a first bracket 1 and a second bracket 2. The first bracket 1 and the second bracket 2 fix the heater body 3 from the upper and lower ends, respectively. The first bracket 1 is fixed to the water channel 5, and the second bracket 2 is fixed to the front crossbeam 6. Specifically, in this embodiment, the heater body 3 is located below the water channel 5 and above the front crossbeam 6 in the Z-direction of the vehicle body, and behind the front bulkhead 7 in the X-direction of the vehicle body. The first bracket 1 connects the water channel 5 and the heater body 3 in the X-direction of the vehicle body, and the second bracket 2 connects the heater body 3 and the front crossbeam 6 in the X-direction of the vehicle body. That is, the first bracket 1 and the second bracket 2 fix the heater body 3 from the upper and lower ends along the Z-direction of the vehicle body between the water channel 5 and the front crossbeam 6. The PTC heater mounting assembly of this invention firmly fixes the heater body 3 between the water channel 5 and the front crossbeam 6 through the first bracket 1 and the second bracket 2, which reduces shaking during driving, reduces abnormal noise, and improves the driving experience.

[0023] Furthermore, the first bracket 1 in this utility model includes a first plate 11, a second plate 12, and a third plate 13. The first plate 11, the second plate 12, and the third plate 13 are connected as a single unit and integrally formed. The first plate 11 is fixedly connected to the water channel 5, and the third plate 13 is fixedly connected to the heater body 3. The second plate 12 is positioned between the first plate 11 and the third plate 13 in the Z-direction of the vehicle body. The lower end of the first plate 11 is connected to the second plate 12, and the upper end of the third plate 13 is connected to the second plate 12. Specifically, in one embodiment of this utility model, the second plate 12 is a sheet metal part parallel to the XY plane of the vehicle body. The first plate 11 extends obliquely upward from the front end of the second plate 12 toward the water channel 5, and the third plate 13 extends downward from the rear end of the second plate 12 toward the heater body 3. That is, the first plate 11, the second plate 12, and the third plate 13 are connected to form an approximately "Z"-shaped structure. The profile of the first plate 11 and the corresponding sheet metal profile of the lower part of the water channel 5 have the same orientation in the vehicle. The included angle between the first plate 11 and the second plate 12 is an obtuse angle. A reinforcing rib 41 is provided at the connection between the first plate 11 and the second plate 12. The second plate 12 and the third plate 13 are arranged vertically. A weight-reducing hole 42 for reducing structural weight is also provided in the middle of the second plate 12.

[0024] Please refer to the following: Figure 4Furthermore, the first bracket 1 also includes a first connecting part 1a and a second connecting part 1b. The first connecting part 1a is used to connect and fix with the water tank 5. The first connecting part 1a is disposed on the first plate 11, and the first connecting part 1a and the water tank 5 are connected and fixed relative to each other through a first buffer connector 14. The second connecting part 1b is used to connect and fix with the heater body 3. The second connecting part 1b is disposed on the third plate 13, and the second connecting part 1b and the heater body 3 are connected by bolts. Specifically, in one embodiment of the present invention, the first buffer connector 14 includes a first bolt head 141, a first bolt body 142, a first bolt bushing 145, a first buffer pad 143, a second buffer pad 144, and a first nut. The first bolt head 141 is located on one end of the first bolt body 142 and is also located on the end of the first buffer connector 14 away from the water tank 5. The first nut is located on the other end of the first bolt head 141 and is connected to the first bolt body 142. The first nut is also located on the end of the first buffer connector 14 near the water trough 5, secured by threads. The first bolt bushing 145 is a hollow "T"-shaped structure. The small end of the first bolt bushing 145 is axially fitted onto the first bolt body 142, and the large end of the first bolt bushing 145 abuts against the first bolt head 141 and is axially limited by the first bolt head 141 to prevent the first bolt bushing 145 from coming off the first buffer connector 14. The large end of the first bolt bushing 145 also abuts against the second buffer pad 144. The large end of the first bolt bushing 145 is sandwiched between the second buffer pad 144 and the first bolt head 141; the first buffer pad 143 and the second buffer pad 144 are respectively located at the front and rear ends of the first connecting part 1a. The first buffer pad 143 is disposed between the first connecting part 1a and the water channel 5 and abuts against the first connecting part 1a and the water channel 5 respectively. The second buffer pad 144 is disposed between the first connecting part 1a and the first bolt head 141 and abuts against the large end of the first connecting part 1a and the first bolt bushing 145 respectively. Both the impact pad 143 and the second buffer pad 144 are annular structures, preferably made of durable and flexible materials such as rubber, which have good vibration absorption effect. The portion of the first bolt body 142 inside the first bolt bushing 145 passes through the first buffer pad 143, the first connecting part 1a, and the second buffer pad 144, while the portion of the first bolt body 142 outside the first bolt bushing 145 passes through the first nut. The small end of the first bolt bushing 145 passes through the water channel 5, the first buffer pad 143, the first connecting part 1a, and the second buffer pad 144. This utility model uses a first buffer connector 14 with the first buffer pad 143 and the second buffer pad 144 to connect and fix the first bracket 1 to the water channel 5, forming a shock absorber between the water channel 5 and the first bracket 1, further reducing the risk of abnormal noise caused by shaking of the heater body 3 during driving.

[0025] Furthermore, the first connecting part 1a is a recessed platform structure formed by the sheet metal surface of the first plate 11 recessed towards the side of the water channel 5. The first connecting part 1a is also provided with a "U"-shaped opening facing the side of the first plate 11. The upper part of the first plate 11 is provided with two first connecting parts 1a. The "U"-shaped openings on the two first connecting parts 1a are symmetrically facing the left and right sides, respectively, which makes it convenient to directly remove the first buffer connector 14 from the left and right sides along the U-shaped openings during later maintenance, avoiding "hard insertion and pulling" into the sheet metal and reducing the difficulty of maintenance.

[0026] Furthermore, the second connecting part 1b is a recessed platform structure formed by the sheet metal surface of the third plate 13 recessed towards the heater body 3. The second connecting part 1b is screwed to the corresponding mounting point on the top of the heater body 3 by a back-mounted bolt. In one embodiment of this utility model, two second connecting parts 1b are provided on the third plate 13, and the corresponding mounting point on the top of the heater body 3 is located on the side away from the front panel 7. This utility model reduces the difficulty of disassembling the third plate 13 from the heater body 3 during later maintenance by using a back-mounted bolt on the upper end of the heater body 3, avoiding the need for workers to remove the bolt from the front panel 7 side, effectively reducing labor time and maintenance difficulty.

[0027] Furthermore, the first bracket 1 also includes a first pipe clamp 15, which is integrally connected to the second plate 12. The first pipe clamp 15 is used to clamp and fix the heater core inlet pipe 8. Specifically, in one embodiment of the present invention, the first pipe clamp 15 is disposed below the second plate 12. The heater core inlet pipe 8 is connected to the heater body 3 and the heater core in the engine compartment, respectively. Since the portion of the heater core inlet pipe 8 behind the front bulkhead 7 is located below the water channel 5, the placement of the first pipe clamp 15 below the second plate 12 can effectively save space below the water channel 5 and around the heater body 3. In a preferred embodiment of the present invention, the first pipe clamp 15 is fixed to the lower part of the second plate 12 by bolts located around the weight reduction holes 42 of the second plate 12.

[0028] Furthermore, the second bracket 2 in this utility model includes a fourth plate 21, a fifth plate 22, and a sixth plate 23. The fourth plate 21, the fifth plate 22, and the sixth plate 23 are connected as a single unit and integrally formed. The fourth plate 21 is fixedly connected to the heater body 3, and the sixth plate 23 is fixedly connected to the front crossbeam 6. The fifth plate 22 is positioned between the fourth plate 21 and the sixth plate 23 in the Z-direction of the vehicle body. The lower end of the fourth plate 21 is connected to the fifth plate 22, and the upper end of the sixth plate 23 is connected to the fifth plate 22. Specifically, in one embodiment of this utility model, the fourth plate 21 is arranged parallel to the third plate 13. The fifth plate 22 extends obliquely downward from the lower end of the fourth plate 21 to the front crossbeam 6, and the sixth plate 23 extends downward from the lower end of the fifth plate 22. That is, the fourth plate 21, the fifth plate 22, and the sixth plate 23 are connected to form an approximately "Z"-shaped structure. The profiles of the sixth plate 23 and the fifth plate 22 are the same as the corresponding sheet metal on the upper part of the front crossbeam 6 in the vehicle. The included angle between the fourth plate 21 and the fifth plate 22 is an obtuse angle, and the included angle between the fifth plate 22 and the sixth plate 23 is also an obtuse angle. A reinforcing rib 41 is provided at the connection between the fifth plate 22 and the sixth plate 23. Weight reduction holes 42 for reducing structural weight are also provided in the middle of the fifth plate 22 and the middle of the sixth plate 23.

[0029] Please refer to the following: Figure 5Furthermore, the second bracket 2 also includes a third connecting part 2a and a fourth connecting part 2b. The third connecting part 2a is used to connect and fix with the heater body 3. The third connecting part 2a is disposed on the fourth plate 21, and the third connecting part 2a and the heater body 3 are connected by bolts. The fourth connecting part 2b is used to connect and fix with the front crossbeam 6. The fourth connecting part 2b is disposed on the sixth plate 23, and the fourth connecting part 2b and the front crossbeam 6 are connected and fixed relative to each other by the second buffer connector 24. Specifically, in one embodiment of this utility model, the second buffer connector 24 includes a second bolt head 241, a second bolt body, a second bolt bushing 245, a third buffer pad 243, a fourth buffer pad 244, and a second nut 246. The second bolt head 241 is located at one end of the second bolt body and is also located at the end of the second buffer connector 24 away from the front crossbeam 6. The second nut 246 is located at the other end of the second bolt head 241 and is threadedly fixed to the second bolt body. The second nut 246 is also located at the end of the second buffer connector 24 away from the front crossbeam 6. The second bolt bushing 245 is a hollow "T"-shaped structure. The small end of the second bolt bushing 245 is axially sleeved on the second bolt body, and the large end of the second bolt bushing 245 abuts against the second nut 246 and is axially limited by the second nut 246 to prevent the second bolt bushing 245 from coming off the second buffer connector 24. The large end of the second bolt bushing 245 is also connected to the fourth buffer pad 244. The large end of the second bolt bushing 245 is sandwiched between the fourth buffer pad 244 and the second nut 246; the third buffer pad 243 and the fourth buffer pad 244 are located at the front and rear ends of the fourth connecting part 2b, respectively. The third buffer pad 243 is disposed between the fourth connecting part 2b and the front crossbeam 6 and abuts against the fourth connecting part 2b and the front crossbeam 6, respectively. The fourth buffer pad 244 is disposed between the fourth connecting part 2b and the second bolt bushing 245 and abuts against the fourth connecting part 2b and the second bolt bushing 245, respectively. Both pad 243 and the fourth buffer pad 244 are annular structures, preferably made of durable and flexible materials such as rubber, providing good vibration absorption. The portion of the second bolt body inside the second bolt bushing 245 passes through the front crossbeam 6, the third buffer pad 243, the fourth connecting part 2b, and the fourth buffer pad 244. The portion of the second bolt body outside the second bolt bushing 245 passes through the second nut 246. The small end of the second bolt bushing 245 passes through the second buffer pad 144, the fourth connecting part 2b, and the second buffer pad 144. This invention uses a second buffer connector 24 with the third buffer pad 243 and the fourth buffer pad 244 to connect and fix the second bracket 2 to the front crossbeam 6, forming a shock absorber between the front crossbeam 6 and the second bracket 2, further reducing the risk of abnormal noise caused by shaking of the heater body 3 during driving.

[0030] Furthermore, the third connecting part 2a is a recessed platform structure formed by the sheet metal surface of the fourth plate 21 recessed towards the heater body 3. The third connecting part 2a is screwed to the corresponding mounting point at the bottom of the heater body 3 by a back-mounted bolt. In one embodiment of this utility model, two third connecting parts 2b are provided on the fourth plate 21, and the corresponding mounting point at the top of the heater body 3 is located on the side away from the front panel 7. This utility model reduces the difficulty of disassembling the fourth plate 21 from the heater body 3 during later maintenance by using a back-mounted bolt at the lower end of the heater body 3, avoiding the need for workers to remove the bolt from the front panel 7 side, effectively reducing labor time and maintenance difficulty.

[0031] Furthermore, the second bracket 2 also includes a second pipe clamp 25, which is integrally connected to the sixth plate 23. The second pipe clamp 25 is used to clamp and fix the radiator outlet pipe 9. Specifically, in one embodiment of this utility model, the second pipe clamp 25 is located at the rear of the sixth plate 23. Since the portion of the radiator outlet pipe 9 behind the front panel 7 is located below and behind the heater body 3, setting the second pipe clamp 25 at the rear of the sixth plate 23 can effectively utilize the space below the heater body 3 and around the front crossbeam 6. In a preferred embodiment of this utility model, the second pipe clamp 25 is fixed to the rear of the sixth plate 23 by bolts located around the weight reduction holes 42 of the sixth plate 23.

[0032] Furthermore, the present invention also includes a front bulkhead assembly, which includes the aforementioned PTC heater fixing assembly.

[0033] In summary, the PTC heater mounting assembly of this invention firmly fixes the heater body 3 between the water channel 5 and the front crossbeam 6 via the first bracket 1 and the second bracket 2. This creates a vibration damping effect between the water channel 5 and the first bracket 1, and between the front crossbeam 6 and the second bracket 2, reducing the risk of abnormal noise caused by shaking of the heater body 3 during driving and improving the driving experience. Furthermore, by mounting bolts on the back of the heater body 3, this invention reduces the difficulty of removing the first bracket 1 and the second bracket 2 from the heater body 3 during later maintenance, avoiding the need for workers to remove bolts from the front bulkhead 7 side, effectively reducing labor time and maintenance difficulty.

[0034] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A PTC heater securing assembly, characterized by: It includes a first bracket (1) and a second bracket (2). The first bracket (1) and the second bracket (2) fix the heater body (3) from the upper and lower ends respectively. The first bracket (1) is fixed on the water trough (5) and the second bracket (2) is fixed on the front crossbeam (6).

2. The PTC heater securing assembly of claim 1, wherein: The first bracket (1) includes a first plate (11), a second plate (12) and a third plate (13) that are connected as one piece. The first plate (11) is fixedly connected to the water channel (5), and the third plate (13) is fixedly connected to the heater body (3). The second plate (12) is disposed between the first plate (11) and the third plate (13) in the Z direction of the vehicle body. The lower end of the first plate (11) is connected to the second plate (12), and the upper end of the third plate (13) is connected to the second plate (12). The lower end of the second plate (12) is provided with a first pipe clamp (15). The first pipe clamp (15) is connected to the second plate (12) as one piece. The first pipe clamp (15) is used to clamp and fix the inlet pipe (8) of the heater tank. A reinforcing rib (41) is provided between the first plate (11) and the second plate (12).

3. The PTC heater securing assembly of claim 1, wherein: The first bracket (1) further includes a first connecting part (1a), which is used to connect and fix with the water tank (5). The first connecting part (1a) and the water tank (5) are connected and fixed relative to each other through a first buffer connector (14).

4. The PTC heater securing assembly of claim 3, wherein: The first buffer connector (14) includes a first bolt head (141), a first bolt body (142), a first buffer pad (143), and a second buffer pad (144). The first bolt head (141) is located at one end of the first bolt body (142) away from the water channel (5). The first buffer pad (143) and the second buffer pad (144) are located at the front and rear ends of the first connecting part (1a), respectively. The first buffer pad (143) is disposed between the first connecting part (1a) and the water channel (5). The second buffer pad (144) is disposed between the first connecting part (1a) and the first bolt head (141). The first bolt body (142) passes through the first buffer pad (143), the first connecting part (1a), and the second buffer pad (144).

5. The PTC heater stationary assembly as described in claim 1, characterized in that: The first bracket (1) further includes a second connecting part (1b), which is used to connect and fix to the heater body (3). The second connecting part (1b) and the heater body (3) are connected by bolts. The mounting point of the second connecting part (1b) and the heater body (3) is located on the side away from the front panel (7).

6. The PTC heater securing assembly of claim 1, wherein: The second bracket (2) includes a fourth plate (21), a fifth plate (22) and a sixth plate (23) that are connected as one unit. The fourth plate (21) is fixedly connected to the heater body (3), and the sixth plate (23) is fixedly connected to the front crossbeam (6). The fifth plate (22) is positioned between the fourth plate (21) and the sixth plate (23) in the Z direction of the vehicle body. The lower end of the fourth plate (21) is connected to the fifth plate (22), and the upper end of the sixth plate (23) is connected to the fifth plate (22). A second pipe clamp (25) is provided behind the sixth plate (23). The second pipe clamp (25) is connected to the sixth plate (23) as one unit. The second pipe clamp (25) is used to clamp and fix the radiator outlet pipe (9). A reinforcing rib (41) is provided between the fifth plate (22) and the sixth plate (23).

7. The PTC heater securing assembly of claim 1, wherein: The second bracket (2) also includes a third connecting part (2a), which is used to connect and fix to the heater body (3). The third connecting part (2a) and the heater body (3) are connected by bolts. The mounting point of the third connecting part (2a) and the heater body (3) is located on the side away from the front panel (7).

8. The PTC heater securing assembly of claim 1, wherein: The second bracket (2) also includes a fourth connecting part, which is used to connect and fix with the front crossbeam (6). The fourth connecting part and the front crossbeam (6) are connected and fixed relative to each other through a second buffer connector.

9. The PTC heater securing assembly of claim 8, wherein: The second buffer connector includes a second bolt head (241), a second bolt body, a third buffer pad (243), and a fourth buffer pad (244). The second bolt head (241) is located at one end of the second bolt body away from the front crossbeam (6). The third buffer pad (243) and the fourth buffer pad (244) are located at the front and rear ends of the fourth connection, respectively. The third buffer pad (243) is disposed between the fourth connection and the front crossbeam (6) and abuts against the fourth connection and the front crossbeam (6), respectively. The fourth buffer pad (244) abuts against the fourth connection. The second bolt body passes through the front crossbeam (6), the third buffer pad (243), the fourth connection, and the fourth buffer pad (244).

10. A front bulkhead assembly, characterized in that: It includes the PTC heater stationary assembly as described in any one of claims 1 to 9.

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