Solder paste bottle storage device
By designing a horizontally stacked flow section and drive component for the solder paste bottle storage device, the problem of unreasonable space utilization in existing storage racks is solved, achieving greater storage capacity and first-in-first-out (FIFO) operation, and preventing damage to the solder paste bottles.
Patent Information
- Application Number
- CN202422663408.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Existing solder paste storage racks have problems such as inefficient use of internal space leading to small storage capacity, and they cannot meet the first-in, first-out (FIFO) usage requirements.
Design a solder paste bottle storage device that employs a multi-horizontal stacked flow section structure, combined with a drive component to move the solder paste bottle along the height of the shell, achieving first-in, first-out, and ensuring smooth movement through anti-backflow components and arc-shaped connecting plates.
It increases the storage capacity of solder paste bottles within the same area and implements the first-in-first-out (FIFO) principle, avoiding space waste and damage to solder paste bottles.
Smart Images
Figure CN223560137U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tin cream bottle storage technical field, especially a kind of tin cream bottle storage device. BACKGROUND
[0002] SMT (Surface Mount Technology, Surface Mount Technology) tin cream used is important raw material, and tin cream itself quality aspect has strict storage requirement, including time, environmental temperature, humidity etc. In workshop production environment, tin cream is often used according to first-in first-out requirement, tin cream is mixed, and is randomly taken when using, cannot be achieved first-in first-out, causes tin cream to expire waste;Existing storage rack is so that tin cream bottle can be taken according to first-in first-out principle, so V-shaped or S-shaped storage guide rail groove is set in storage rack interior to tin cream bottle is stored, but this design needs to be inclined to set storage guide rail groove, and storage guide rail groove inclined to set will occupy more space of storage rack, and many spaces cannot be utilized, so the storage capacity of existing storage rack is small. SUMMARY
[0003] The utility model discloses a kind of tin cream storage devices, to solve the problem of unreasonable utilization of internal space of existing storage rack leads to small storage capacity.
[0004] To achieve the above object, the utility model provides a kind of tin cream bottle storage device, comprising:
[0005] Shell, with inlet and outlet;
[0006] Storage assembly, in the shell, the storage assembly has multiple flow-through sections, each flow-through section includes inlet and outlet, multiple flow-through sections are stacked along the height direction of the shell, the inlet of the flow-through section located at the top of the shell is communicated with the inlet, the outlet of the flow-through section located at the bottom of the shell is communicated with the outlet, the outlet of one of the two adjacent flow-through sections located in the middle of the shell is communicated with the inlet of the other;
[0007] Drive assembly, in the shell, the drive assembly is used to drive tin cream bottle in each flow-through section to move from the inlet to the outlet.
[0008] In an embodiment, the storage assembly includes multiple flow-through grooves, the flow-through groove includes cover plate and bottom plate, the cover plate is covered on the bottom plate to form the flow-through section.
[0009] In an embodiment, the bottom plate comprises a first side plate, a second side plate and a third side plate, the second side plate and the third side plate are arranged at two ends of the first side plate, the second side plate and the third side plate are arranged in opposite directions, and the first side plate is provided with an anti-backflow member towards the wall surface of the cover plate, the anti-backflow member gradually moves away from the wall surface in the direction from the inlet to the outlet.
[0010] In an embodiment, the bottom plate further comprises an arc-shaped connecting plate for connecting the first side plate and the second side plate, and the arc-shaped surface of the arc-shaped connecting plate faces the inlet.
[0011] In an embodiment, the bottom plate further comprises an elastic member, one end of the elastic member is arranged on the first side plate, and the other end of the elastic member is arranged on the second side plate, and the elastic member faces the inlet.
[0012] In an embodiment, the driving assembly comprises an air pump, an air pipe and a plurality of air nozzles, the plurality of air nozzles are arranged on the air pipe, each air nozzle is in communication with each flow passage, each air nozzle is arranged close to the position where the inlet of the flow passage is arranged, and the direction of each air nozzle is arranged in the direction from the inlet to the outlet.
[0013] In an embodiment, the air pipe comprises a main pipe and two branch pipes, and the two branch pipes are in communication with the main pipe.
[0014] In an embodiment, the feeding port is provided with a dustproof assembly, the dustproof assembly comprises a dustproof plate, a connecting shaft and a torsional spring, the dustproof plate is rotatably arranged in the feeding port through the connecting shaft, and the torsional spring is connected with the dustproof plate and the wall surface of the feeding port respectively to close the feeding port when the dustproof plate is not forced.
[0015] In an embodiment, the tin paste bottle storage device further comprises a receiving portion, the receiving portion is arranged at the discharging port of the shell, and the receiving portion is used for receiving the tin paste bottle discharged from the discharging port.
[0016] In an embodiment, the receiving portion comprises a receiving frame, a buffer spring, a damper and a rubber pad, one end of the damper is arranged on the receiving frame, the buffer spring is arranged on the outer periphery of the damper, and the rubber pad is arranged at the end of the damper away from the receiving frame.
[0017] The technical scheme of the utility model discloses a plurality of flow sections in the storage assembly are arranged in a stacked mode along the height direction of the shell, and the two adjacent flow sections are arranged in a head-tail communication mode, so that the space in the shell can be more reasonably utilized, since each flow section in the storage assembly is arranged in a horizontal state, and the plurality of flow sections are arranged in a stacked mode along the height of the shell, more solder paste bottles can be stored in the shell with the same area, and the solder paste bottle storage device arranged in this way can still realize the use principle of first-in first-out. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structure shown in the drawings without creative labor for those skilled in the art.
[0019] Figure 1 The structure schematic diagram of the embodiment of the solder paste bottle storage device provided by the utility model is shown in the figure.
[0020] Figure 2 The structure schematic diagram of the flow section in the utility model is shown in the figure. Figure 1 The cross-sectional structure schematic diagram of the solder paste bottle storage device in the utility model is shown in the figure.
[0021] Figure 3 The structure schematic diagram of the flow section in the utility model is shown in the figure. Figure 2 The exploded view schematic diagram of the flow section in the utility model is shown in the figure.
[0022] Figure 4 The exploded view schematic diagram of the flow section in the utility model is shown in the figure. Figure 3 The exploded view schematic diagram of the flow section in the utility model is shown in the figure.
[0023] Explanation of the drawing reference numeral:
[0024] 100, solder paste bottle storage device, 10, shell, 11, feeding port, 12, discharging port, 13, visual window, 20, flow section, 21, inlet, 22, outlet, 23, cover plate, 24, bottom plate, 241, first side plate, 242, second side plate, 243, third side plate, 244, anti-backflow piece, 245, arc-shaped connecting plate, 246, elastic piece, 30, driving assembly, 31, air pump, 32, air pipe, 33, air nozzle, 40, heat exchanger, 50, dustproof assembly, 60, receiving part.
[0025] The realization, functional characteristics and advantages of the utility model will be further explained by combining with the embodiments and referring to the drawings. DETAILED DESCRIPTION
[0026] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0027] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications will also change accordingly.
[0028] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.
[0029] The existing storage rack is designed to allow the tin cream bottle to be taken according to the first-in first-out principle, so a V-shaped or S-shaped storage guide groove is arranged inside the storage rack to store the tin cream bottle. However, this design needs to arrange the storage guide groove in an inclined manner, which occupies more space of the storage rack, and leaves a lot of space unused. Therefore, the existing storage rack generally has the problem of small storage capacity.
[0030] The utility model provides a kind of tin cream bottle storage device 100.
[0031] Please refer to Figures 1 to 4In the embodiment of the present application, the tin paste bottle storage device 100 comprises a shell 10, a storage assembly and a driving assembly 30, wherein the shell 10 has a feeding port 11 and a discharging port 12; the storage assembly is arranged in the shell 10, and the storage assembly has a plurality of flow-through sections; each flow-through section comprises an inlet 21 and an outlet 22; the plurality of flow-through sections are arranged in a stacked manner along the height direction of the shell 10; the inlet 21 of the flow-through section located at the top of the shell 10 is communicated with the feeding port 11; the outlet 22 of the flow-through section located at the bottom of the shell 10 is communicated with the discharging port 12; the outlet 22 of one of the two adjacent flow-through sections located in the middle of the shell 10 is communicated with the inlet 21 of the other flow-through section; and the driving assembly 30 is arranged in the shell 10, and the driving assembly 30 is used for driving the tin paste bottle in each flow-through section to move from the inlet 21 to the outlet 22.
[0032] The utility model discloses a technical scheme, including casing 10, casing 10 is hollow setting, and is set up feed inlet 11 in the upper position of casing 10, is set up discharge outlet 12 in the lower position of casing 10, for the convenience of storing the tin paste bottle, and satisfy the principle of taking out first entering first simultaneously, the inside of casing 10 is provided with storage assembly, wherein storage assembly has multiple flow sections, and each flow section is equipped with inlet 21 and outlet 22, and multiple flow sections are set in the way of layering along the height direction of casing 10, in this embodiment, the through direction of each flow section is flush with the horizontal direction, and the storage assembly set up like this can better realize the utilization of the internal space of casing 10, and the surplus space cannot be utilized because of the inclined setting, so the multiple flow sections of layering setting formed by storage assembly can realize the laying utilization of the space in casing 10 as far as possible in this embodiment, in this embodiment, the inlet 21 of the flow section in the upper position is connected with the feed inlet 11 in the upper position of casing 10, and the outlet 22 of the flow section in the lower position is connected with the discharge outlet 12 in the lower position of casing 10, and the inlet 21 of one of two flow sections in the middle of casing 10 and adjacent to each other is connected with the outlet 22 of the other, to form a curved and connected storage cavity, so that the tin paste bottle stored in the storage assembly from feed inlet 11 is placed in the storage assembly according to the storage order, so that the principle of taking out first entering first can be realized, so that the tin paste bottle in the flow section can move smoothly in the curved multiple flow sections, and the tin paste bottle moves smoothly from the feed inlet 11 of casing 10 to the direction of discharge outlet 12, in this embodiment, drive assembly 30 is also set in the inside of casing 10, and drive assembly 30 can be a conveying belt, a pressure pushing assembly or a gas pushing assembly, and the selection of drive assembly 30 is not limited, and drive assembly 30 can drive the tin paste bottle in the flow section to move from the direction of feed inlet 11 to the direction of discharge outlet 12, so that the space in casing 10 can be utilized more reasonably, and more tin paste bottles can be stored in the casing 10 of the same area, and the tin paste storage device 100 set like this can still realize the principle of taking out first entering first.
[0033] In one embodiment, as Figures 2 to 4As shown, the storage assembly comprises a plurality of flow channels 20, the flow channels 20 comprise a cover plate 23 and a bottom plate 24, the cover plate 23 covers the bottom plate 24 to form the flow section. In order to facilitate the replacement and maintenance of the storage assembly, in the embodiment, the storage assembly comprises a plurality of flow channels 20, the flow channels 20 comprise a cover plate 23 and a bottom plate 24, the cover plate 23 covers the bottom plate 24 to form the flow section, the inlet 21 and the outlet 22, in the embodiment, the plurality of flow channels 20 are still connected in a stacked manner, the adjacent flow channels 20 can be connected by gluing, or can be connected by inserting or buckling, which is not limited, in this way, when a flow channel 20 in the storage assembly is damaged, the damaged flow channel 20 can be disassembled and replaced.
[0034] In an embodiment, as shown in Figure 4 As shown, the bottom plate 24 comprises a first side plate 241, a second side plate 242 and a third side plate 243, the second side plate 242 and the third side plate 243 are arranged at both ends of the first side plate 241, the extension direction of the second side plate 242 and the third side plate 243 is opposite, the first side plate 241 is provided with an anti-backflow member 244 on the wall surface facing the cover plate 23, the anti-backflow member 244 gradually moves away from the wall surface in the direction from the inlet 21 to the outlet 22. In order to prevent the tin paste bottle in the flow section from moving back, in the embodiment, the anti-backflow member 244 is arranged on the side of the first side plate 241 of the bottom plate 24 facing the cover plate 23, the anti-backflow member 244 is arranged obliquely, which gradually moves away from the wall surface of the first side plate 241 in the direction from the inlet 21 to the outlet 22 (arranged obliquely in the direction from the inlet 21 to the outlet 22 of the flow section towards the cover plate 23), in this way, the tin paste bottle passing through the anti-backflow member 244 can be effectively prevented from flowing back to the initial position, in the embodiment, the anti-backflow member 244 can be a rubber strip, which has a certain elastic force to restore the deformation.
[0035] In an embodiment, as shown in Figure 4As shown, the bottom plate 24 further comprises an arc-shaped connecting plate 245, which is used to connect the first side plate 241 and the second side plate 242, and the arc-shaped surface of the arc-shaped connecting plate 245 faces the inlet 21. In order to make the tin paste bottle entering the flow-through section through the feeding port 11 better convert the gravity into the power of moving in the direction from the inlet 21 to the outlet 22 of the flow-through section, in the embodiment, the arc-shaped connecting plate 245 is further arranged between the first side plate 241 and the second side plate 242, and the arc-shaped surface of the arc-shaped connecting plate 245 faces the feeding port 11 or the inlet 21. When the tin paste bottle enters the flow-through section or enters another flow-through section from one flow-through section, the tin paste bottle will contact the arc-shaped surface of the arc-shaped connecting plate 245 due to falling. Since the arc-shaped surface is arranged, the tin paste bottle will be pushed to move, so that the tin paste bottle is more easily moved in the direction from the inlet 21 to the outlet 22 of the flow-through section. Through the arrangement, the tin paste bottle can move more smoothly in the flow-through section.
[0036] In another embodiment, as shown in Figure 4 the bottom plate 24 further comprises an elastic member 246, one end of the elastic member 246 is arranged on the first side plate 241, and the other end of the elastic member 246 is arranged on the second side plate 242, and the elastic member 246 faces the inlet 21. In order to achieve the anti-falling effect on the tin paste bottle, in the embodiment, the elastic member 246 is further arranged, wherein one end of the elastic member 246 is arranged on the inner side of the first side plate 241, and the other end of the elastic member 246 is arranged on the inner side of the second side plate 242. At this time, part of the surface of the elastic member 246 faces the feeding port 11 or the inlet 21. When the tin paste bottle enters the flow-through section from the feeding port 11 or enters another flow-through section from the outlet 22 of one flow-through section, the elastic member 246 will elastically support the bottle body of the tin paste bottle, so as to prevent the tin paste bottle from directly colliding with the inner wall of the flow-through section and being damaged. When the elastic member 246 restores the deformation, the elastic member 246 has the same effect as the arc-shaped connecting plate 245 in the above embodiment, that is, the gravity of the tin paste bottle falling is converted into a pushing force, so that the tin paste bottle can more smoothly flow in the storage assembly.
[0037] In an embodiment, as shown in Figure 2As shown, the driving assembly 30 comprises an air pump 31, an air pipe 32 and a plurality of air nozzles 33, the air nozzles 33 are arranged on the air pipe 32, each air nozzle 33 is in communication with each flow passage, each air nozzle 33 is arranged near the position where the inlet 21 of the flow passage is arranged, and the direction of each air nozzle 33 is arranged along the direction from the inlet 21 to the outlet 22. In order to reduce the occupation of the internal space of the shell 10 by the driving assembly 30, in the embodiment, the driving assembly 30 comprises the air pump 31, the air pipe 32 and the plurality of air nozzles 33, wherein the air pump 31 is connected in communication with the air pipe 32, the plurality of air nozzles 33 are arranged on the air pipe 32, each air nozzle 33 is in communication with each flow passage, the air nozzle 33 is arranged near the position where the inlet 21 of the flow passage is arranged, the air nozzle 33 is arranged on the side wall of the second side plate 242 in the above-mentioned embodiment, and the direction of the air nozzle 33 is consistent with the direction from the inlet 21 to the outlet 22. When the solder paste bottle enters the flow passage through the inlet 21, the air pump 31 transports air to the air nozzle 33 through the air pipe 32, and finally the air is sprayed out of the air nozzle 33 to the solder paste bottle, so as to drive the solder paste bottle to move towards the outlet 22 of the flow passage. The driving assembly 30 arranged in this way can reduce the occupation of the internal space of the shell 10 by the air pipe 32, so that the space in the shell 10 can be better reserved for the storage assembly.
[0038] In an embodiment, as shown in Figure 2 The air pipe 32 comprises a main pipe and two branch pipes, and the two branch pipes are connected in communication with the main pipe. The solder paste bottle storage device 100 further comprises a heat exchanger 40 arranged between the two branch pipes and the main pipe, and connected in communication with the two branch pipes and the main pipe respectively. Since the flow passage in the storage assembly is arranged in a meandering manner, in order to drive the solder paste bottle in each flow passage, in the embodiment, the air pipe 32 comprises a main pipe and two branch pipes, wherein the main pipe is used to be connected in communication with the air pump 31, and the two branch pipes are arranged on the two sides of the internal space of the shell 10 respectively, and connected in communication with the flow groove 20 opposite to the flow direction of the solder paste bottle respectively, so that the air pump 31, the main pipe, the two branch pipes and the plurality of air nozzles 33 can drive the solder paste bottle in each flow passage to move from the inlet 21 to the outlet 22.
[0039] In an embodiment, as shown in Figure 2As shown, the feed port 11 is provided with a dustproof assembly 50, which comprises a dustproof plate, a connecting shaft and a torsion spring, the dustproof plate is rotatably arranged in the feed port 11 through the connecting shaft, and the torsion spring is connected with the dustproof plate and the wall surface of the feed port 11 respectively, so that the dustproof plate closes the feed port 11 when not under force. In order to prevent dust from the outside from entering the inside of the storage assembly through the feed port 11, in the embodiment, the dustproof assembly 50 is arranged at the feed port 11, which comprises a dustproof plate, a connecting shaft and a torsion spring, wherein the dustproof plate is rotatably arranged in the feed port 11 through the connecting shaft, and the torsion spring is connected with the dustproof plate at one end and with the wall surface of the feed port 11 at the other end, and the wall surface of the feed port 11 is used as a fulcrum to drive the dustproof plate to close the feed port 11. When the solder paste bottle is put into the feed port 11, because the gravity of the solder paste bottle is greater than the elastic force of the torsion spring, therefore, the solder paste bottle can smoothly pass through the feed port 11 into the flow section. Of course, the dustproof assembly 50 is not limited.
[0040] In an embodiment, as shown in the drawings, Figure 2 The solder paste bottle storage device 100 further comprises a receiving part 60 arranged at the discharge port 12 of the shell 10, which is used for receiving the solder paste bottle discharged from the discharge port 12. In order to facilitate the taking out of the solder paste bottle from the discharge port 12, in the embodiment, the L-shaped receiving part 60 is arranged at the position of the discharge port 12 of the shell 10, which is mainly used for receiving the solder paste bottle discharged from the discharge port 12. Because the receiving part 60 protrudes from the shell 10, it is convenient to use the solder paste bottle.
[0041] In an embodiment, as shown in the drawings, Figure 2 The receiving part 60 comprises a receiving frame, a buffer spring, a damper and a rubber pad, one end of the damper is arranged in the receiving frame, the buffer spring is arranged on the outer periphery of the damper, and the rubber pad is arranged at the end of the damper away from the receiving frame. In order to prevent the solder paste bottle from being damaged when contacting with the receiving part 60, in the embodiment, the buffer spring, the damper and the rubber pad are arranged on the receiving frame of the receiving part 60, wherein one end of the damper is arranged on the receiving frame, the other end is provided with the rubber pad, and the buffer spring is sleeved on the outer periphery of the damper. In this way, when the solder paste bottle contacts with the rubber pad, the rubber pad, the buffer spring and the damper can effectively offset the gravity, so as to prevent the solder paste bottle from being directly contacted with the receiving part 60 and damaged.
[0042] The above-mentioned is only an exemplary embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the present application.
Claims
1. A tin paste bottle storage device characterized by, The application relates to a tin paste bottle storage device. The tin paste bottle storage device comprises a shell, a storage assembly and a driving assembly. The shell is provided with an inlet and an outlet. The storage assembly is arranged in the shell and comprises a plurality of flow-through sections.
2. The tin paste bottle storage device according to claim 1, wherein Each flow-through section comprises an inlet and an outlet.
3. The tin-paste bottle storage device according to claim 2, wherein The plurality of flow-through sections are arranged in a stacked mode along the height direction of the shell.
4. The tin paste bottle storage device according to claim 3, wherein The inlet of the flow-through section at the top of the shell is communicated with the inlet.
5. The tin paste bottle storage device according to claim 3, wherein The outlet of the flow-through section at the bottom of the shell is communicated with the outlet.
6. The tin-paste bottle storage device according to claim 1, wherein The outlet of one of the two adjacent flow-through sections at the middle of the shell is communicated with the inlet of the other flow-through section.
7. The tin paste bottle storage device according to any one of claims 1 to 5, wherein The driving assembly is arranged in the shell and is used for driving the tin paste bottle in each flow-through section to move from the inlet to the outlet.
8. The tin-paste bottle storage device according to any one of claims 1 to 5, wherein The driving assembly comprises an air pump, an air pipe and a plurality of air nozzles.
9. The tin-paste bottle storage device according to claim 8, wherein The plurality of air nozzles are arranged on the air pipe. Each air nozzle is communicated with each flow-through section. Each air nozzle is arranged close to the position where the inlet of the flow-through section is arranged. The direction of each air nozzle is arranged along the direction from the inlet to the outlet. The storage assembly comprises a plurality of flow-through grooves. The flow-through groove comprises a cover plate and a bottom plate. The cover plate is arranged on the bottom plate to form the flow-through section. The bottom plate comprises a first side plate, a second side plate and a third side plate. The second side plate and the third side plate are arranged at the two ends of the first side plate. The extending direction of the second side plate is opposite to that of the third side plate. The wall surface of the first side plate towards the cover plate is provided with an anti-backflow member. The anti-backflow member gradually moves away from the wall surface along the direction from the inlet to the outlet. The bottom plate further comprises an arc-shaped connecting plate. The arc-shaped connecting plate is used for connecting the first side plate and the second side plate. The arc-shaped surface of the arc-shaped connecting plate is towards the inlet. The bottom plate further comprises an elastic member. One end of the elastic member is arranged on the first side plate. The other end of the elastic member is arranged on the second side plate. The elastic member is towards the inlet. The air pipe comprises a main pipe and two branch pipes. The two branch pipes are communicated with the main pipe. The inlet is provided with a dustproof assembly. The dustproof assembly comprises a dustproof plate, a connecting shaft and a torsional spring. The dustproof plate is rotatably arranged in the inlet through the connecting shaft. The torsional spring is connected with the dustproof plate and the wall surface of the inlet respectively. The dustproof plate closes the inlet when it is not forced. The tin paste bottle storage device further comprises a receiving part. The receiving part is arranged at the outlet of the shell. The receiving part is used for receiving the tin paste bottle discharged from the outlet. The receiving part comprises a receiving frame, a buffer spring, a damper and a rubber pad. One end of the damper is arranged on the receiving frame. The buffer spring is arranged on the outer periphery of the damper. The rubber pad is arranged on the end of the damper away from the receiving frame.