Adjustable bench press

Abstract

The utility model discloses a kind of adjustable bench press benches, solve the height of bench press chair in prior art cannot be adjusted, and the problem that user cannot understand own bench press training condition. The utility model includes a pair of parallelly arranged side frames, side frame upper frame is respectively slidably arranged on two side frames, and it is arranged between two side frame upper frames for supporting the training of user's receiving plate, and detection mechanism for detecting bench press force is respectively arranged on the bottom of two side frames;Fixed mechanism for fixing side frame upper frame is arranged between side frame upper frame and side frame. The utility model adjusts the position of side frame upper frame on side frame, and rotates fixed mechanism, so that side frame upper frame is fixed on side frame, when user carries out bench press training on receiving plate, the detection mechanism on the bottom of side frame carries out real-time detection to bench press thrust on receiving plate, so as to facilitate user to carry out real-time detection to own training condition.

Description

Technical Field

[0001] This utility model belongs to the field of fitness equipment technology, specifically relating to an adjustable bench press bench. Background Technology

[0002] As people's living standards continue to improve, fitness is receiving more and more attention from the general public. The bench press, as the most effective way to develop upper limb extensor muscles, has always been popular among fitness enthusiasts. Bench press exercises are usually performed using a bench press rack, which includes a frame and a seat. The frame is used to place the barbell and support the seat, and the user sits on the seat to perform bench press exercises.

[0003] Traditional bench press chairs and frames are fixed structures, and the height of the chair cannot be adjusted during use. If a tall person lies on the chair, their legs are bent, which can cause discomfort during prolonged bench press training. If a shorter person lies on the chair, their legs can be straightened, but their feet cannot be placed on the footrest, thus affecting their bench press training. At the same time, the chair cannot detect the bench press force used, making it inconvenient to record the user's training data. Utility Model Content

[0004] This utility model provides an adjustable bench press to at least solve some of the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An adjustable bench press includes a pair of parallel side frames, upper side frames slidably mounted on the two side frames, a support plate between the two upper side frames for supporting the user's training, and detection mechanisms at the bottom of the two side frames for detecting bench press force; a fixing mechanism is provided between the upper side frames and the side frames for fixing the upper side frames.

[0007] Furthermore, the side frame includes a base and a pair of guide columns disposed on the base and slidably connected to the upper frame of the side frame; a fixing mechanism is disposed between the guide columns and the upper frame of the side frame, and a detection mechanism is disposed at the bottom of the base.

[0008] Furthermore, the side frame upper frame includes legs that are slidably mounted on two guide posts, and an installation rod located between the two legs and connected to the bottom surface of the receiving plate. The fixing mechanism is located between the guide posts and the legs.

[0009] Furthermore, the fixing mechanism includes several adjusting threaded holes on the guide post, positioning threaded holes on the support leg, and positioning bolts threadedly connected to the adjusting threaded holes and positioning threaded holes.

[0010] Furthermore, a crossbar is provided between the two legs.

[0011] Furthermore, the side wall of the outrigger is provided with an inclined support rod that is connected to the bottom surface of the support plate.

[0012] Furthermore, the testing mechanism includes pressure sensors located at the bottom of a pair of side frames, and a microcontroller located on one of the side frames and connected to the pressure sensors; the microcontroller is connected to an external mobile phone via a Bluetooth transceiver module.

[0013] Furthermore, the side frame is provided with sensor mounting holes, and the pressure sensor is installed in the sensor mounting holes.

[0014] Furthermore, one of the side frames is equipped with a pair of footplates.

[0015] Furthermore, the receiving plate is provided with a breathing mounting hole, and a breathing hole pad is provided inside the breathing mounting hole.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This utility model has a simple structure, a scientific and reasonable design, and is easy to use. By adjusting the position of the upper frame of the side frame on the side frame and rotating the fixing mechanism, the upper frame of the side frame is fixed on the side frame. When the user performs bench press training on the support plate, the detection mechanism at the bottom of the side frame detects the bench press force on the support plate in real time, so as to facilitate the real-time detection of the user's training data. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is an exploded view of the present invention.

[0020] Figure 3 This is a schematic diagram of the side frame of this utility model.

[0021] Figure 4 This is a schematic diagram of the upper frame of the side bracket of this utility model.

[0022] The names corresponding to the reference numerals in the attached figures are as follows:

[0023] 1. Side frame; 2. Upper frame of side frame; 3. Support plate; 4. Base; 5. Guide column; 6. Support leg; 7. Mounting rod; 8. Adjustment threaded hole; 9. Positioning threaded hole; 10. Positioning bolt; 11. Crossbar; 12. Diagonal support rod; 13. Pressure sensor; 14. Microcontroller; 15. Sensor mounting hole; 16. Foot plate; 17. Breathing hole pad; 18. Breathing mounting hole; 19. Mounting groove. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; of course, they can also refer to a mechanical connection or an electrical connection; furthermore, they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Example 1.

[0028] like Figure 1-4 As shown, the present invention provides an adjustable bench press bench, comprising a pair of parallel side frames 1, a side frame upper frame 2 slidably mounted on the two side frames 1, a support plate 3 between the two side frame upper frames 2 for supporting the user's training, and a detection mechanism at the bottom of the two side frames 1 for detecting bench press force; a fixing mechanism for fixing the side frame upper frame 2 is provided between the side frame upper frame 2 and the side frame 1.

[0029] This utility model has two side frame upper frames 2 slidably mounted on side frame 1, and a support plate 3 positioned between the two side frame upper frames 2. By sliding the side frame upper frames 2, the height of the support plate 3 can be easily adjusted, allowing people of different heights to perform bench press training on the bench. Two detection mechanisms are respectively located at the bottom of the two side frames 1, which can detect the pushing force of the user during training, thus facilitating the trainee's understanding of their training progress. A fixing mechanism is positioned between the side frame upper frames 2 and the side frame 1, which can easily fix the side frame upper frames 2, thereby preventing the side frame upper frames 2 from sliding during use.

[0030] In use, by adjusting the position of the upper frame 2 on the side frame 1 and rotating the fixing mechanism, the upper frame 2 is fixed on the side frame 1. When the user performs bench press training on the support plate 3, the detection mechanism at the bottom of the side frame 1 detects the bench press force on the support plate 3 in real time, so as to detect the training data in real time and make it easier for the user to understand their training status.

[0031] Example 2.

[0032] like Figure 1-4 As shown, the present invention provides an adjustable bench press bench, comprising a pair of parallel side frames 1, a side frame upper frame 2 slidably mounted on the two side frames 1, a support plate 3 between the two side frame upper frames 2 for supporting the user's training, and a detection mechanism at the bottom of the two side frames 1 for detecting bench press force; a fixing mechanism for fixing the side frame upper frame 2 is provided between the side frame upper frame 2 and the side frame 1.

[0033] The side frame 1 includes a base 4 and a pair of guide columns 5 disposed on the base 4 and slidably connected to the upper frame 2 of the side frame; a fixing mechanism is disposed between the guide columns 5 and the upper frame 2 of the side frame, and a detection mechanism is disposed at the bottom of the base 4.

[0034] This embodiment 2 provides a more preferred structure for the side frame 1 based on embodiment 1. Specifically, the side frame 1 includes a base 4 and a pair of guide columns 5 disposed on the base 4 and slidably connected to the upper frame 2 of the side frame; a fixing mechanism is disposed between the guide columns 5 and the upper frame 2 of the side frame, and a detection mechanism is disposed at the bottom of the base 4.

[0035] In this utility model, two guide posts 5 are set on the top surface of the base 4, and the guide posts 5 are slidably connected to the upper frame 2 of the side frame. The guide posts 5 can guide the sliding direction of the upper frame 2 of the side frame. The detection mechanism is set at the bottom of the base 4, so as to facilitate the detection of the pressure on the support plate 3. The fixing mechanism is set between the guide posts 5 and the upper frame 2 of the side frame, so as to facilitate the fixing of the upper frame 2 of the side frame to the guide posts 5.

[0036] Example 3.

[0037] like Figure 1-4 As shown, the present invention provides an adjustable bench press bench, comprising a pair of parallel side frames 1, a side frame upper frame 2 slidably mounted on the two side frames 1, a support plate 3 between the two side frame upper frames 2 for supporting the user's training, and a detection mechanism at the bottom of the two side frames 1 for detecting bench press force; a fixing mechanism for fixing the side frame upper frame 2 is provided between the side frame upper frame 2 and the side frame 1.

[0038] The side frame 1 includes a base 4 and a pair of guide columns 5 disposed on the base 4 and slidably connected to the upper frame 2 of the side frame; a fixing mechanism is disposed between the guide columns 5 and the upper frame 2 of the side frame, and a detection mechanism is disposed at the bottom of the base 4.

[0039] The side frame 2 includes support legs 6 that are slidably mounted on two guide posts 5, and mounting rods 7 that are located between the two support legs and connected to the bottom surface of the support plate 3. The fixing mechanism is located between the guide posts 5 and the support legs 6.

[0040] This embodiment 3 provides a more preferred structure for the side frame upper frame 2 based on embodiment 2. Specifically, the side frame upper frame 2 includes support legs 6 that are slidably mounted on two guide columns 5, and mounting rods 7 that are located between the two support legs and connected to the bottom surface of the support plate 3. The fixing mechanism is located between the guide columns 5 and the support legs 6.

[0041] In this invention, two support legs 6 are slidably mounted on two guide posts 5, and a mounting rod 7 is positioned between the two support legs 6. In use, the support legs 6 are slid along the height direction of the guide posts 5 by sliding the support legs 6. When the support legs 6 are adjusted to a suitable position, the support legs 6 are fixed to the guide posts 5 by a fixing mechanism, thereby facilitating the adjustment of the height of the receiving plate 3.

[0042] The support leg 6 of this utility model is provided with an installation groove 19 that is adapted to the guide post 5. The support leg 6 is installed on the guide post 5 through the installation groove 19 and slides along the height direction of the guide post 5.

[0043] Example 4.

[0044] like Figure 1-4 As shown, the present invention provides an adjustable bench press bench, comprising a pair of parallel side frames 1, a side frame upper frame 2 slidably mounted on the two side frames 1, a support plate 3 between the two side frame upper frames 2 for supporting the user's training, and a detection mechanism at the bottom of the two side frames 1 for detecting bench press force; a fixing mechanism for fixing the side frame upper frame 2 is provided between the side frame upper frame 2 and the side frame 1.

[0045] The side frame 1 includes a base 4 and a pair of guide columns 5 disposed on the base 4 and slidably connected to the upper frame 2 of the side frame; a fixing mechanism is disposed between the guide columns 5 and the upper frame 2 of the side frame, and a detection mechanism is disposed at the bottom of the base 4.

[0046] The side frame 2 includes support legs 6 that are slidably mounted on two guide posts 5, and mounting rods 7 that are located between the two support legs and connected to the bottom surface of the support plate 3. The fixing mechanism is located between the guide posts 5 and the support legs 6.

[0047] The fixing mechanism includes several adjusting threaded holes 8 on the guide post 5, positioning threaded holes 9 on the support leg 6, and positioning bolts 10 threadedly connected to the adjusting threaded holes 8 and the positioning threaded holes 9.

[0048] This embodiment 4 provides a more preferred structure for the fixing mechanism based on embodiment 3. Specifically, the fixing mechanism includes several adjusting threaded holes 8 opened on the guide column 5, positioning threaded holes 9 opened on the support leg 6, and positioning bolts 10 threadedly connected to the adjusting threaded holes 8 and the positioning threaded holes 9.

[0049] In this invention, when adjusting the height of the receiving plate 3, the adjusting threaded holes 8 of different heights are aligned with the positioning threaded holes 9, and the positioning bolts 10 are threaded into the adjusting threaded holes 8 and the positioning threaded holes 9, thereby facilitating the adjustment of the height of the receiving plate 3. This invention has three adjusting threaded holes 8.

[0050] The positioning threaded hole 9 of this utility model is connected to the mounting groove 19.

[0051] Example 5.

[0052] like Figure 1-4 As shown, the present invention provides an adjustable bench press bench, comprising a pair of parallel side frames 1, a side frame upper frame 2 slidably mounted on the two side frames 1, a support plate 3 between the two side frame upper frames 2 for supporting the user's training, and a detection mechanism at the bottom of the two side frames 1 for detecting bench press force; a fixing mechanism for fixing the side frame upper frame 2 is provided between the side frame upper frame 2 and the side frame 1.

[0053] The side frame 1 includes a base 4 and a pair of guide columns 5 disposed on the base 4 and slidably connected to the upper frame 2 of the side frame; a fixing mechanism is disposed between the guide columns 5 and the upper frame 2 of the side frame, and a detection mechanism is disposed at the bottom of the base 4.

[0054] The side frame 2 includes support legs 6 that are slidably mounted on two guide posts 5, and mounting rods 7 that are located between the two support legs and connected to the bottom surface of the support plate 3. The fixing mechanism is located between the guide posts 5 and the support legs 6.

[0055] A crossbar 11 is provided between the two support legs 6.

[0056] This embodiment 5 provides a more preferred structure for the support leg 6 based on embodiment 3, specifically: a crossbar 11 is provided between the two support legs 6.

[0057] The crossbar 11 of this utility model is set between the two legs 6, and the crossbar 11 can effectively increase the structural strength of the legs 6.

[0058] Example 6.

[0059] like Figure 1-4 As shown, the present invention provides an adjustable bench press bench, comprising a pair of parallel side frames 1, a side frame upper frame 2 slidably mounted on the two side frames 1, a support plate 3 between the two side frame upper frames 2 for supporting the user's training, and a detection mechanism at the bottom of the two side frames 1 for detecting bench press force; a fixing mechanism for fixing the side frame upper frame 2 is provided between the side frame upper frame 2 and the side frame 1.

[0060] The side frame 1 includes a base 4 and a pair of guide columns 5 disposed on the base 4 and slidably connected to the upper frame 2 of the side frame; a fixing mechanism is disposed between the guide columns 5 and the upper frame 2 of the side frame, and a detection mechanism is disposed at the bottom of the base 4.

[0061] The side frame 2 includes support legs 6 that are slidably mounted on two guide posts 5, and mounting rods 7 that are located between the two support legs and connected to the bottom surface of the support plate 3. The fixing mechanism is located between the guide posts 5 and the support legs 6.

[0062] An inclined support rod 12 is provided on the side wall of the support leg 6, which is connected to the bottom surface of the support plate 3.

[0063] Based on embodiment 3, this embodiment 6 provides a more preferred structure for the support leg 6, specifically: the support leg 6 is provided with an inclined support rod 12 on its side wall that is connected to the bottom surface of the support plate 3.

[0064] The inclined support rod 12 of this utility model is inclinedly installed on the side wall of the support leg 6 and is connected to the bottom surface of the support plate 3. The inclined support rod 12 can effectively increase the load-bearing capacity of the support plate 3, thereby improving the application range of the support plate 3.

[0065] Example 7.

[0066] like Figure 1-4 As shown, the present invention provides an adjustable bench press bench, comprising a pair of parallel side frames 1, a side frame upper frame 2 slidably mounted on the two side frames 1, a support plate 3 between the two side frame upper frames 2 for supporting the user's training, and a detection mechanism at the bottom of the two side frames 1 for detecting bench press force; a fixing mechanism for fixing the side frame upper frame 2 is provided between the side frame upper frame 2 and the side frame 1.

[0067] The detection mechanism includes a pressure sensor 13 located at the bottom of a pair of side frames 1, and a microcontroller 14 located on one of the side frames 1 and connected to the pressure sensor 13; the microcontroller 14 is connected to an external mobile phone via a Bluetooth transceiver module.

[0068] This embodiment 7 provides a more preferred structure for the detection mechanism based on embodiment 1. Specifically, the detection mechanism includes a pressure sensor 13 located at the bottom of a pair of side frames 1, and a microcontroller 14 located on one of the side frames 1 and connected to the pressure sensor 13. The microcontroller 14 is connected to an external mobile phone via a Bluetooth transceiver module.

[0069] In this invention, two pressure sensors 13 are respectively disposed at the bottom of the base 4, and a microcontroller 14 is disposed on the side wall of one of the bases 4. The microcontroller 14 is connected to the two pressure sensors 13 and is connected to an external mobile phone via a Bluetooth transceiver module. In use, the pressure sensors 13 can monitor the pressure on the support plate 3 in real time and transmit the detection results to the microcontroller 14. The microcontroller 14 transmits the data to an external mobile phone via the Bluetooth transceiver module, thereby facilitating the user's understanding of their training status and enabling the user to formulate their own training plan.

[0070] Example 8.

[0071] like Figure 1-4 As shown, the present invention provides an adjustable bench press bench, comprising a pair of parallel side frames 1, a side frame upper frame 2 slidably mounted on the two side frames 1, a support plate 3 between the two side frame upper frames 2 for supporting the user's training, and a detection mechanism at the bottom of the two side frames 1 for detecting bench press force; a fixing mechanism for fixing the side frame upper frame 2 is provided between the side frame upper frame 2 and the side frame 1.

[0072] The detection mechanism includes a pressure sensor 13 located at the bottom of a pair of side frames 1, and a microcontroller 14 located on one of the side frames 1 and connected to the pressure sensor 13; the microcontroller 14 is connected to an external mobile phone via a Bluetooth transceiver module.

[0073] The side frame 1 is provided with a sensor mounting hole 15, and the pressure sensor 13 is installed in the sensor mounting hole 15.

[0074] This embodiment 8 provides a more preferred structure for the side frame 1 based on embodiment 7. Specifically, the side frame 1 is provided with a sensor mounting hole 15, and the pressure sensor 13 is installed in the sensor mounting hole 15.

[0075] The sensor mounting hole 15 of this utility model is opened through the base 4, and the pressure sensor 13 is installed in the sensor mounting hole 15. The number of sensor mounting holes 15 corresponds one-to-one with the number of pressure sensors 13. The sensor mounting hole 15 can facilitate the installation of pressure sensors 13.

[0076] Example 9.

[0077] like Figure 1-4 As shown, the present invention provides an adjustable bench press bench, comprising a pair of parallel side frames 1, a side frame upper frame 2 slidably mounted on the two side frames 1, a support plate 3 between the two side frame upper frames 2 for supporting the user's training, and a detection mechanism at the bottom of the two side frames 1 for detecting bench press force; a fixing mechanism for fixing the side frame upper frame 2 is provided between the side frame upper frame 2 and the side frame 1.

[0078] One of the side frames 1 is equipped with a pair of footplates 16.

[0079] This embodiment 9 provides a more preferred structure for the side frame 1 based on embodiment 1, specifically: a pair of foot plates 16 are provided on one of the side frames 1.

[0080] The two footplates 16 of this utility model are respectively installed on the top surface of the base 4, and the bottom of the footplate 16 is provided with threaded holes. The bolts are threaded into the threaded holes and the sensor mounting holes 15. The footplates 16 can easily support the user's legs, thereby facilitating the user to perform bench press training.

[0081] Example 10.

[0082] like Figure 1-4 As shown, the present invention provides an adjustable bench press bench, comprising a pair of parallel side frames 1, a side frame upper frame 2 slidably mounted on the two side frames 1, a support plate 3 between the two side frame upper frames 2 for supporting the user's training, and a detection mechanism at the bottom of the two side frames 1 for detecting bench press force; a fixing mechanism for fixing the side frame upper frame 2 is provided between the side frame upper frame 2 and the side frame 1.

[0083] The receiving plate 3 is provided with a breathing mounting hole 18, and a breathing hole pad 17 is provided inside the breathing mounting hole 18.

[0084] This embodiment 10 provides a more preferred structure for the receiving plate 3 based on embodiment 1, specifically: the receiving plate 3 is provided with a breathing mounting hole 18, and a breathing hole pad 17 is provided inside the breathing mounting hole 18.

[0085] The receiving plate 3 of this utility model is provided with a breathing hole pad 17, and a breathing hole pad 17 is installed inside the breathing hole pad 17, which can facilitate the support of the user's head.

[0086] The pressure sensor 13, microcontroller 14, Bluetooth transceiver module, and mobile phone used in this utility model are all existing technologies and can be purchased and used directly on the market. Therefore, the structure, circuit, and principle of the pressure sensor 13, microcontroller 14, Bluetooth transceiver module, and mobile phone will not be described in detail here.

[0087] Finally, it should be noted that the above embodiments are merely preferred embodiments of this utility model used to illustrate the technical solutions of this utility model, and are not intended to limit it, nor are they intended to limit the patent scope of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. That is to say, any changes or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but whose technical problems are still consistent with those of this utility model, should be included within the protection scope of this utility model. In addition, the direct or indirect application of the technical solutions of this utility model to other related technical fields are similarly included within the patent protection scope of this utility model.

Claims

1. An adjustable bench press, characterized in that, It includes a pair of parallel side frames (1), a side frame upper frame (2) that is slidably mounted on the two side frames (1), a support plate (3) between the two side frame upper frames (2) for supporting user training, and a detection mechanism at the bottom of the two side frames (1) for detecting bench press force; a fixing mechanism for fixing the side frame upper frame (2) is provided between the side frame upper frame (2) and the side frame (1); The detection mechanism includes a pressure sensor (13) located at the bottom of a pair of side frames (1), and a microcontroller (14) located on one of the side frames (1) and connected to the pressure sensor (13); the microcontroller (14) is connected to an external mobile phone via a Bluetooth transceiver module.

2. The adjustable bench press according to claim 1, characterized in that, The side frame (1) includes a base (4) and a pair of guide columns (5) on the base (4); the upper frame (2) of the side frame is slidably mounted on the guide columns (5); the fixing mechanism is located between the guide columns (5) and the upper frame (2) of the side frame, and the detection mechanism is located at the bottom of the base (4).

3. An adjustable bench press according to claim 2, characterized in that, The side frame upper frame (2) includes support legs (6) that are slidably mounted on two guide columns (5) respectively, and mounting rods (7) that are located between the two support legs (6) and connected to the bottom surface of the support plate (3). The fixing mechanism is located between the guide columns (5) and the support legs (6).

4. An adjustable bench press according to claim 3, characterized in that, The fixing mechanism includes several adjusting threaded holes (8) on the guide post (5), positioning threaded holes (9) on the support leg (6), and positioning bolts (10) threadedly connected to the adjusting threaded holes (8) and positioning threaded holes (9).

5. An adjustable bench press according to claim 3, characterized in that, A crossbar (11) is provided between the two support legs (6).

6. An adjustable bench press according to claim 3, characterized in that, An inclined support rod (12) is provided on the side wall of the support leg (6) and connected to the bottom surface of the support plate (3).

7. An adjustable bench press according to claim 1, characterized in that, The side frame (1) is provided with sensor mounting holes (15), and the pressure sensor (13) is installed in the sensor mounting holes (15).

8. An adjustable bench press according to claim 1, characterized in that, One of the side frames (1) is equipped with a pair of footplates (16).

9. An adjustable bench press according to claim 1, characterized in that, The receiving plate (3) is provided with a breathing mounting hole (18), and a breathing hole pad (17) is provided inside the breathing mounting hole (18).

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