Atomization device

Abstract

The utility model discloses atomization equipment which comprises an oil storage bin, an oil inlet channel, an oil storage cavity and an oil inlet channel are formed in the oil storage bin, an atomization assembly is installed in the oil storage cavity, and the air inlet channel is communicated with an atomization cavity of the atomization assembly; the oil supply bottle is detachably mounted in the oil storage bin, and an oil supply cavity and an oil supply channel communicated with the oil supply cavity are formed in the oil supply bottle; the rotary drum is installed on the equipment body and can rotate relative to the oil storage bin, an air inlet check block is arranged on the inner wall of the rotary drum, the oil supply check block is installed on the rotary drum to rotate along with rotation of the rotary drum, the oil supply check block is provided with a switch hole penetrating through the two sides of the oil supply check block, and the rotary drum is provided with an oil passing position and an oil sealing position on the rotation track; at the oil passing position, the switch hole is communicated with the oil inlet channel and the oil supply channel, and the air inlet channel is opened by the air inlet check block; and at the oil sealing position, the switch hole and the oil supply channel are staggered, and the air inlet check block shields a channel opening of the air inlet channel. According to the technical scheme, the dry burning phenomenon of the atomization equipment is effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to atomization technical field, especially atomization equipment. BACKGROUND

[0002] The existing atomization equipment, form inside have oil storage cavity, then install atomization subassembly in oil storage cavity, atomization subassembly can adsorb the oil liquid in oil storage cavity, simultaneously, atomization equipment inside usually form atomization gas path and make up gas path, atomization gas path links together atomization subassembly's atomization chamber and the one side of microphone, make up gas path one end and outside link together, make up gas path other end link together the other side of microphone, pass through setting battery again, be used for atomization subassembly power supply, when the user atomization gas path suction, atomization gas path inside air reduces, the air pressure of microphone one side reduces, the air pressure of microphone other side is equal to atmospheric pressure, the pressure difference of microphone two sides makes that microphone produces capacitance change, microphone is triggered, and microphone produces electric signal to the circuit board of atomization equipment, and the circuit board controls battery atomization subassembly power supply, makes atomization subassembly power on and heats, thereby converts the oil liquid of adsorption into gas mist, supplies the user and inhales.

[0003] To meet the large number and compliance requirements, more and more external hanging oil bottle type atomization equipment appears in the market, an oil supply bottle is hung on the equipment main body to supply oil to the oil storage cavity of the equipment main body. During transportation, the oil supply bottle is packaged separately from the equipment main body to meet the compliance requirements. When in use, the oil supply bottle is installed on the equipment main body after being unpacked, the amount of tobacco tar of the entire atomization equipment is increased, and large number is realized. However, the existing atomization equipment is not reasonable in structure design. When the oil supply bottle does not supply oil to the oil storage cavity, the atomization chamber of the atomization subassembly can still take in air when the atomization subassembly does not adsorb oil. Therefore, when the user sucks the atomization equipment, the battery can still supply power to the atomization subassembly to heat the atomization subassembly, and thus dry burning is prone to occur. Therefore, it is necessary to design a new type of atomization equipment, so that the oil in the bottle does not leak out when the oil supply bottle is detached, so as to avoid pollution of other parts of the atomization equipment. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide an atomization equipment, which aims to solve the problem of dry burning of the existing atomization equipment.

[0005] To achieve the above-mentioned purpose, the atomization equipment provided by the utility model comprises:

[0006] The equipment main body comprises an oil storage bin, the oil storage bin is formed with an air inlet channel, an oil storage cavity and an oil inlet channel communicated with the oil storage cavity, the oil storage cavity is installed with an atomization subassembly, and the air inlet channel is communicated with an atomization chamber of the atomization subassembly;

[0007] The oil supply bottle is detachably installed in the oil storage bin, and the oil supply bottle is formed with an oil supply cavity and an oil supply channel communicated with the oil supply cavity, and the oil supply channel corresponds to the oil inlet channel;

[0008] The drum is installed in the equipment body and can rotate relative to the oil storage bin, the inner wall of the drum is provided with an air inlet block, and the oil supply block is installed in the drum to rotate with the drum. The oil supply block is provided with an opening and closing hole penetrating through both sides thereof. The drum has an oil passing position and an oil sealing position on a rotation track. In the oil passing position, both ends of the opening and closing hole are communicated with the oil inlet channel and the oil supply channel respectively, and the air inlet block is located at the side of the air inlet channel to open the air inlet channel. In the oil sealing position, the opening and closing hole is misaligned with the oil supply channel, so that the oil supply block isolates the oil inlet channel and the oil supply channel, and the air inlet block blocks the channel opening of the air inlet channel.

[0009] Optionally, an elastic air passage member is inserted at one end of the air inlet channel close to the air inlet block. The elastic air passage member is formed with a sealing protrusion close to the end wall of the channel opening of the air inlet channel. The elastic air passage member is provided with an air inlet cavity penetrating through both ends thereof and communicated with the air inlet channel. In the oil sealing position, the air inlet block abuts against the sealing protrusion and blocks the air inlet cavity.

[0010] Optionally, the inner wall of the air inlet channel is provided with a limiting protrusion, and the outer wall of the elastic air passage member is provided with a limiting recess. The limiting protrusion is inserted in the limiting recess.

[0011] Optionally, the equipment body further comprises a mounting shell. The upper end of the mounting shell is open. The drum is installed at the upper end of the shell and forms a mounting cavity with the shell. The oil storage bin and the oil supply bottle installed with the oil storage bin are accommodated in the mounting cavity. The inner wall of the lower part of the drum extends inward to form the air inlet block. The inner wall of the upper part of the drum forms a limiting groove. The groove opening of the limiting groove faces upward. One side of the limiting groove is open to communicate with the inside of the drum. The oil supply block is located in the inside of the drum and can rotate relative to the oil supply bottle. The end of the oil supply block is inserted into the limiting groove, so that the drum is limited to rotate with the drum.

[0012] Optionally, the equipment body further comprises a battery holder. The battery holder is installed in the mounting shell and located below the oil storage bin. A battery is installed in the inside of the battery holder. One of the inner wall of the mounting shell and the outer wall of the battery holder is provided with a clamping protrusion, and the other is provided with a clamping groove. The clamping protrusion and the clamping groove are adapted to be clamped.

[0013] Optionally, the upper end of the battery holder is inserted into the lower end of the rotating drum, the inner wall of the rotating drum is provided with a stroke limiting protrusion, the outer wall of the battery holder is provided with a stroke limiting groove extending along the circumference of the battery holder, the two end walls of the stroke limiting groove in the extending direction respectively comprise a first end wall and a second end wall, when the rotating drum is in the oil passing position, the stroke limiting protrusion is in contact with the first end wall, and when the rotating drum is in the oil sealing position, the stroke limiting protrusion is in contact with the second end wall.

[0014] Optionally, the rotating drum comprises an installation section and an operation section in sequence in the height direction, the installation section is rotatably inserted into the installation shell, and the operation section is located outside the installation shell for a user to rotate.

[0015] Optionally, the outer diameter of the installation section is smaller than the outer diameter of the operation section, so that a first limiting step is formed at the connection position of the installation section and the operation section, and the upper end wall of the installation shell abuts against the step surface of the first limiting step.

[0016] Optionally, the outer wall of the oil supply bottle is formed with a second limiting step, and the end wall of the operation section away from the installation section abuts against the step surface of the second limiting step.

[0017] The technical scheme of the utility model, through setting up rotating drum and oil supply block, realize simultaneously passing oil and air, or simultaneously sealing oil and air, so that when the oil supply bottle does not supply oil to the oil storage cavity, and the atomization assembly does not adsorb oil, the air inlet block blocks the channel opening of the air inlet channel, blocks the microphone and the atomization cavity, so that the microphone cannot be sensed, so that the battery cannot control the power supply of the atomization assembly, in this way, the atomization assembly will not be heated, and dry burning phenomenon is avoided. 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 following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in the drawings without creating labor.

[0019] Figure 1 It is the structural schematic diagram of the atomization equipment of the utility model;

[0020] Figure 2 It is the sectional structure schematic diagram of the rotating drum of the atomization equipment of the utility model when the oil passing position;

[0021] Figure 3 It is the sectional structure schematic diagram of the rotating drum of the atomization equipment of the utility model when the oil sealing position;

[0022] Figure 4 It is a structure schematic view of the elastic ventilation member of the atomization equipment of the utility model;

[0023] Figure 5 It is a structure schematic view of the rotating drum of the atomization equipment of the utility model;

[0024] Figure 6 It is a structure schematic view of the mounting shell of the atomization equipment of the utility model;

[0025] Figure 7 It is a structure schematic view of the battery holder of the atomization equipment of the utility model.

[0026] Explanation of reference numerals:

[0027] Reference Name Reference Name 100 Oil storage bin 101 Air inlet channel 102 Oil storage cavity 103 Oil inlet channel 110 Atomization assembly 120 Elastic vent 121 Sealing protrusion 122 Air inlet cavity 123 Limiting recess 200 Oil supply bottle 201 Oil supply cavity 202 Oil supply channel 203 Second limiting step 300 Rotary drum 301 Mounting section 302 Operating section 303 First limiting step 310 Air inlet stop block 320 Limiting groove 330 Stroke limiting protrusion 400 Oil supply stop block 401 Switch hole 500 Mounting shell 510 Clamping groove 600 Battery holder 610 Battery 620 Clamping protrusion 630 Stroke limiting groove

[0028] The implementation, functional features and advantages of the utility model will be further described with reference to the accompanying drawings in combination with embodiments. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0031] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, 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" in the full text includes three schemes, taking A and / or B as an example, including A technical solution, B technical solution, and A and B simultaneously satisfying the technical solution; in addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those 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 protection scope required by the utility model.

[0032] The specific structure of the atomization equipment will be mainly described below.

[0033] Referring to Figures 1 to 7 In the embodiment of the utility model, the atomization equipment comprises:

[0034] The equipment main body comprises an oil storage bin 100, the oil storage bin 100 is formed with an air inlet channel 101, an oil storage cavity 102 and an oil inlet channel 103 communicated with the oil storage cavity 102, the oil storage cavity 102 is installed with an atomization assembly 110, the air inlet channel 101 is communicated with an atomization cavity of the atomization assembly 110;

[0035] The oil supply bottle 200 is detachably installed on the oil storage bin 100, the oil supply bottle 200 is formed with an oil supply cavity 201 and an oil supply channel 202 communicated with the oil supply cavity 201, and the oil supply channel 202 is arranged corresponding to the oil inlet channel 103;

[0036] The rotating drum 300 is installed on the equipment main body and can rotate relative to the oil storage bin 100, the inner wall of the rotating drum 300 is provided with an air inlet block 310, the oil supply block 400 is installed on the rotating drum 300 and rotates with the rotation of the rotating drum 300, the oil supply block 400 is provided with an on-off hole 401 penetrating through both sides thereof, and the rotating drum 300 has an oil passing position and an oil sealing position on the rotation track; when the oil passing position, two ends of the on-off hole 401 are communicated with the oil inlet channel 103 and the oil supply channel 202 respectively, and the air inlet block 310 is located at the side of the air inlet channel 101 to open the air inlet channel 101; when the oil sealing position, the on-off hole 401 is dislocated with the oil supply channel 202, so that the oil supply block 400 isolates the oil inlet channel 103 and the oil supply channel 202, and the air inlet block 310 blocks the channel mouth of the air inlet channel 101.

[0037] Specifically, in the embodiment, the rotating drum 300 can drive the oil supply block 400 to rotate, so that the user can rotate the rotating drum 300 to the oil passing position or the oil sealing position. Before use, the atomization equipment can seal the oil inlet channel 103 of the oil storage bin 100 with a sealing plug to ensure the sealing of the oil storage bin 100; at the same time, the oil supply channel 202 of the oil supply bottle 200 is sealed, such as directly sealed with the oil supply block 400, or sealed with a sealing plug, to ensure the sealing of the oil supply bin.

[0038] When the user needs to suck the atomization device, the sealing plug is removed, the oil supply bottle 200 is installed in the oil storage cavity 102, after installation, the rotating drum 300 is rotated to be located in the oil supply position, the two ends of the switch hole 401 are communicated with the oil inlet channel 103 and the oil supply channel 202 respectively, so that the oil in the oil supply bottle 200 can flow into the oil storage cavity 102 through the oil supply channel 202, the switch hole 401 and the oil inlet channel 103 in sequence, and the oil in the oil storage cavity 102 flows and is adsorbed to the atomization assembly 110, and at this time, the air inlet block 310 is located at the side of the air inlet channel 101 to open the air inlet channel 101, so that air can be inhaled, and the user can suck the atomization device to make the microphone control the battery to supply power to the atomization assembly 110, and the atomization assembly 110 is heated to generate aerosol for the user to inhale. When the atomization device is not needed, the rotating drum 300 can be rotated to be located in the oil sealing position, at this time, even if the user sucks the atomization device, the air inlet block 310 blocks the channel opening of the air inlet channel 101, and the microphone is blocked from the atomization cavity, so that the microphone cannot be sensed, and the battery cannot control the power supply to the atomization assembly 110, so that the atomization assembly 110 is not heated, and dry burning phenomenon is avoided.

[0039] The technical scheme of the utility model, through setting up rotating drum 300 and oil supply block 400, realize simultaneously oil supply and air supply, or simultaneously oil sealing and air sealing, so that when the oil supply bottle 200 does not supply oil to the oil storage cavity 102, and the atomization assembly 110 does not adsorb oil, the air inlet block 310 blocks the channel opening of the air inlet channel 101, and the microphone is blocked from the atomization cavity, so that the microphone cannot be sensed, and the battery cannot control the power supply to the atomization assembly 110, so that the atomization assembly 110 is not heated, and dry burning phenomenon is avoided.

[0040] In some embodiments, the end of the air inlet channel 101 close to the air inlet block 310 is inserted with an elastic air passage piece 120, the end wall close to the channel opening of the air inlet channel 101 of the elastic air passage piece 120 is formed with a sealing protrusion 121, the elastic air passage piece 120 is provided with an air inlet cavity 122 penetrating through both ends and communicating with the air inlet channel 101, and the air inlet block 310 abuts against the sealing protrusion 121 and blocks the air inlet cavity 122 when the rotating drum 300 is in the oil sealing position. In this way, the sealing protrusion 121 is elastic, so that the air inlet block 310 can abut against the sealing protrusion 121 tightly, and the sealing property of the air inlet block 310 is improved. Further, the inner wall of the air inlet channel 101 is provided with a limiting protrusion 121, the outer wall of the elastic air passage piece 120 is provided with a limiting recess 123, and the limiting protrusion 121 is inserted in the limiting recess 123. By setting the limiting protrusion 121 and the limiting recess 123, the installation stability of the elastic air passage piece 120 is improved, and the tightness of the abutment between the air inlet block 310 and the sealing protrusion 121 is further improved, so that the sealing property of the air inlet block 310 is further improved.

[0041] As to the manner that the rotating drum 300 drives the oil supply block 400 to rotate, in some embodiments, the device body further comprises a mounting shell 500, the upper end of the mounting shell 500 being open, the rotating drum 300 being mounted at the upper end of the shell and enclosed with the upper end to form a mounting cavity, the oil storage bin 100 and the oil supply bottle 200 being mounted at one end of the oil storage bin 100 and accommodated in the mounting cavity, the inner wall of the lower part of the rotating drum 300 extending inward to form the air inlet block 310, the inner wall of the upper part of the rotating drum 300 forming a limiting groove 320, the opening of the limiting groove 320 facing upward, one side of the limiting groove 320 being open to communicate with the inside of the rotating drum 300, the oil supply block 400 being located in the inside of the rotating drum 300 and rotatable relative to the oil supply bottle 200, the end of the oil supply block 400 being inserted into the limiting groove 320, so that the rotating drum 300 is limited to rotate with the rotating drum 300. That is, in this embodiment, the rotating drum 300 and the oil supply block 400 limit each other, so that the rotating drum 300 can drive the oil supply block 400 to rotate relative to the oil storage bin 100 and the oil supply bin.

[0042] Further, the device body further comprises a battery holder 600, the battery holder 600 being mounted in the mounting shell 500 and located below the oil storage bin 100, a battery 610 being mounted in the inside of the battery holder 600, one of the inner wall of the mounting shell 500 and the outer wall of the battery holder 600 being provided with a clamping protrusion, and the other being provided with a clamping groove, the clamping protrusion and the clamping groove being adapted to be clamped together. That is, the oil supply bottle 200, the oil storage bin 100 and the battery are arranged in an upper-middle-lower manner, the structure is compact, the appearance of the atomization device is improved, and the oil in the oil supply bottle 200 can flow into the oil storage cavity 102 by gravity, so that the oil supply is convenient. The clamping protrusion and the clamping groove improve the mounting stability of the mounting shell 500 and the battery holder 600, and improve the structural stability of the atomization device.

[0043] In some embodiments, the upper end of the battery holder 600 is inserted into the lower end of the rotating drum 300, the inner wall of the rotating drum 300 is provided with a stroke limiting protrusion 330, the outer wall of the battery holder 600 is provided with a stroke limiting groove 630 extending along the circumference of the battery holder 600, the two end walls of the extending direction of the stroke limiting groove 630 respectively comprising a first end wall and a second end wall, when the rotating drum 300 is located at the oil supply position, the stroke limiting protrusion 330 is in contact with the first end wall, and when the rotating drum 300 is located at the oil sealing position, the stroke limiting protrusion 330 is in contact with the second end wall. In this way, the stroke limiting groove 630 and the stroke limiting protrusion 330 limit the rotating stroke of the rotating drum 300 and also have a positioning effect, ensuring that the user can accurately feel whether the rotating drum 300 is rotated to the position, and improving the operation experience of the user.

[0044] In some embodiments, the rotating drum 300 comprises, in sequence in the height direction, a mounting section 301 and an operating section 302, the mounting section 301 is rotatably inserted into the mounting shell 500, and the operating section 302 is located outside the mounting shell 500 for a user to rotate. In this way, the mounting stability of the rotating drum 300 is considered, and the user is facilitated to operate the rotating drum 300, and the operation experience of the user is improved. Further, the outer diameter of the mounting section is smaller than the outer diameter of the operating section, so that a first limiting step 303 is formed at the connection between the mounting section 301 and the operating section 302, and the upper end wall of the mounting shell 500 abuts against the step surface of the first limiting step 303. The first limiting step 303 can limit the rotating drum 300, so that the rotating drum 300 at a preset height does not move up and down, and the relative stability of the rotating drum 300 is ensured.

[0045] In some embodiments, the outer wall of the oil supply bottle 200 is formed with a second limiting step 203, and the end wall of the operating section away from the mounting section abuts against the step surface of the second limiting step 203. Similarly, the second limiting step 203 can limit the rotating drum 300, so that the rotating drum 300 at a preset height does not move up and down, and the relative stability of the rotating drum 300 is ensured.

[0046] The above description is only preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made according to the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. An atomizing device, characterized in that, include: The main body of the equipment includes an oil storage tank, which forms an air inlet channel, an oil storage cavity, and an oil inlet channel communicating with the oil storage cavity. An atomizing component is installed in the oil storage cavity, and the air inlet channel is communicating with the atomizing cavity of the atomizing component. An oil supply bottle is detachably installed in the oil storage tank. The oil supply bottle forms an oil supply chamber and an oil supply channel communicating with the oil supply chamber. The oil supply channel is provided corresponding to the oil inlet channel. The device includes a rotating drum and an oil supply baffle. The rotating drum is mounted on the main body of the equipment and can rotate relative to the oil storage tank. An air inlet baffle is provided on the inner wall of the rotating drum. The oil supply baffle is mounted on the rotating drum to rotate with the rotating drum. The oil supply baffle has a switch hole that passes through both sides. The rotating drum has an oil-opening position and an oil-sealing position on its rotation trajectory. In the oil-opening position, the two ends of the switch hole are connected to the oil inlet channel and the oil supply channel, respectively, and the air inlet baffle is located to the side of the air inlet channel to open the air inlet channel. In the oil-sealing position, the switch hole is misaligned with the oil supply channel so that the oil supply baffle isolates the oil inlet channel and the oil supply channel, and the air inlet baffle blocks the opening of the air inlet channel.

2. The atomizing device as described in claim 1, characterized in that, An elastic vent is inserted into one end of the air intake channel near the air intake baffle. A sealing protrusion is formed on the end wall of the elastic vent near the channel opening of the air intake channel. The elastic vent has an air intake chamber that extends through both ends and communicates with the air intake channel. When the rotating drum is in the oil sealing position, the air intake baffle abuts against the sealing protrusion and blocks the air intake chamber.

3. The atomizing device as described in claim 2, characterized in that, The inner wall of the air intake channel is provided with a limiting protrusion, and the outer wall of the elastic vent is provided with a limiting recess, with the limiting protrusion inserted into the limiting recess.

4. The atomizing device as described in claim 1, characterized in that, The main body of the equipment also includes a mounting shell, the upper end of which is open. The rotating drum is mounted on the upper end of the shell and forms a mounting cavity therewith. The oil storage tank and the oil supply bottle are accommodated in the mounting cavity at one end of the oil storage tank. The lower inner wall of the rotating drum extends inward to form the air intake baffle. The upper inner wall of the rotating drum forms a limiting groove with the opening of the limiting groove facing upward. One side of the limiting groove is open to communicate with the interior of the rotating drum. The oil supply baffle is located inside the rotating drum and can rotate relative to the oil supply bottle. The end of the oil supply baffle is inserted into the limiting groove so that the rotating drum is limited to the rotating drum and rotates with the rotation of the rotating drum.

5. The atomizing device as described in claim 4, characterized in that, The main body of the device also includes a battery rack, which is installed inside the mounting housing and located below the oil storage tank. A battery is installed inside the battery rack. One of the inner wall of the mounting housing and the outer wall of the battery rack is provided with a locking protrusion, and the other is provided with a locking groove. The locking protrusion and the locking groove are adapted to engage.

6. The atomizing device as described in claim 5, characterized in that, The upper end of the battery holder is inserted into the lower end of the rotating drum. The inner wall of the rotating drum is provided with a travel limiting protrusion, and the outer wall of the battery holder is provided with a travel limiting groove extending circumferentially along the battery holder. The two end walls of the travel limiting groove extending in the direction of extension respectively include a first end wall and a second end wall. When the rotating drum is in the oil-filling position, the travel limiting protrusion contacts the first end wall. When the rotating drum is in the oil-sealing position, the travel limiting protrusion contacts the second end wall.

7. The atomizing device as described in claim 4, characterized in that, The rotating drum includes a mounting section and an operating section in sequence along the height direction. The mounting section is rotatably inserted into the mounting housing, and the operating section is located outside the mounting housing for the user to rotate.

8. The atomizing device as described in claim 7, characterized in that, The outer diameter of the mounting section is smaller than the outer diameter of the operating section, so that a first limiting step is formed at the connection between the mounting section and the operating section, and the upper wall of the mounting housing abuts against the step surface of the first limiting step.

9. The atomizing device as described in claim 7, characterized in that, The outer wall of the oil supply bottle is formed with a second limiting step, and the end wall of the operating section away from the installation section abuts against the step surface of the second limiting step.

Images