A heating disc control assembly and electric kettle

Abstract

The application discloses a heating disc control assembly and an electric kettle, and relates to the field of daily electric appliances. The heating disc control assembly comprises a mounting disc, an adjusting disc and a temperature control component. The temperature control component is composed of a sleeve, a first connecting terminal, a second connecting terminal and a compression spring. The lower end of the sleeve is provided with a first adjusting thread. The adjusting disc controls the sleeve to move up and down. The outer sidewall of the sleeve is further provided with a guide groove. The compression spring is arranged between the first connecting terminal and the second connecting terminal. The first connecting terminal is composed of a first push head, a first insulating rod and a first terminal. The second connecting terminal is composed of a second push head, a second insulating rod and a second terminal. The sleeve is driven to move up and down by rotating the adjusting disc, so that the position state of the connecting terminal is changed, the heating temperature threshold is adjusted, and different temperatures can be selected according to actual needs.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of daily electric appliances, in particular to a heating disc control assembly and an electric kettle. BACKGROUND

[0002] With the development of intelligent household appliance technology, temperature-controlled kettles are widely used in modern families and office environments because they can achieve accurate water temperature control and heat preservation functions. Compared with traditional electric kettles that only have the function of "stop when boiling", temperature-controlled kettles realize real-time monitoring and adjustment of water temperature through built-in temperature sensors, microprocessor control systems and heating modules, meeting the use scenarios that have specific requirements for water temperature, such as brewing milk powder, coffee and tea.

[0003] Once the temperature sensor fails, the entire temperature control system will not be able to accurately obtain water temperature data. Most temperature-controlled kettles do not consider the detachability and replaceability of the sensor in the structural design, further increasing the difficulty and cost of later maintenance. SUMMARY

[0004] In order to solve the defects existing in the prior art, the present application provides a heating disc control assembly and an electric kettle.

[0005] The technical solution of the present application is as follows:

[0006] A heating disc control assembly, characterized in that it comprises a mounting disc, an adjusting disc and a temperature control component, a bimetallic strip is connected through the mounting disc,

[0007] The temperature control component is composed of a sleeve, a first connecting terminal, a second connecting terminal and a compression spring, the lower end of the sleeve is provided with a first adjusting thread, and the adjusting disc controls the sleeve to move up and down,

[0008] The outer side wall of the sleeve is further provided with a guide groove, the compression spring is arranged between the first connecting terminal and the second connecting terminal, the first connecting terminal is composed of a first push head, a first insulating rod and a first terminal, the second connecting terminal is composed of a second push head, a second insulating rod and a second terminal,

[0009] The lower side of the first terminal is provided with a clamping arm, the inner side of the clamping arm is provided with a clamping groove, the two sides of the second terminal are provided with guide rods, the upper end of the second terminal is provided with a limiting arm, and the guide rods are installed in the guide groove, so that the second terminal can slide in the guide groove.

[0010] Preferably, the mounting disc comprises a clamping boss, the inner diameter of the clamping boss is provided with a thread, and one side of the clamping boss is provided with a clamping groove,

[0011] The mounting disc further comprises a heat-conducting surface, two sides of the heat-conducting surface are provided with arc-shaped mounting grooves, and the bimetallic strip penetrates through the two arc-shaped mounting grooves.

[0012] Preferably, the guide slot deflects the second terminal during the sliding of the guide rod in the guide slot.

[0013] Preferably, the guide slot is composed of F1, F2 and F3 sections, and the second terminal is deflected when passing through the F2 section.

[0014] Preferably, the guide rod has a set maximum temperature at the upper end of the F3 section and a set minimum temperature at the lower end of the F3 section after being powered.

[0015] An electric kettle characterized in further comprising a base unit and a kettle unit,

[0016] The base unit is composed of a bottom disc, a fixing sheet and an upper coupler, the kettle unit comprises a kettle bottom, a steel ring and a kettle, the kettle bottom is connected with the steel ring through buckles, and the steel ring is also connected with the kettle through buckles, and the middle part of the kettle bottom is provided with a lower coupler matched with the upper coupler.

[0017] The kettle is composed of a kettle body, a handle, a spout and a kettle cover, and the bottom of the kettle body A is provided with a heating disc.

[0018] Preferably, the upper end of the handle is provided with a switch component for controlling the power-on of the heating disc, and the switch component comprises a first button rotationally connected to the handle, and one end of the first button is provided with a knob.

[0019] Preferably, the knob is provided with a through slot, one end of the lower pressing arm is provided with a shaft rod, and the other end is provided with a clamping rod, wherein the shaft rod is located inside the through slot, and one side of the clamping rod is provided with a limiting metal sheet.

[0020] Preferably, the top of the handle is further provided with an un-covering component for controlling the opening and closing of the kettle cover.

[0021] The un-covering component comprises a second button, a wedge-shaped block is fixedly connected below the second button, the second button and the wedge-shaped block move up and down along the handle, and the bottom of the wedge-shaped block is provided with a first reset spring.

[0022] Preferably, the wedge-shaped block is attached to one end of a pull rod, when the wedge-shaped block moves downward, the pull rod can be driven to move rightward, the other end of the pull rod is fixedly connected with a clamping rod, the clamping rod is provided with a second reset spring, and one end of the clamping rod is connected with a latch rod.

[0023] The heating disc control assembly and the electric kettle have the following beneficial effects:

[0024] The temperature control component of the present application is composed of a sleeve, a first connecting terminal, a second connecting terminal, a compression spring and the like, and has a compact overall structure, facilitating integration in the internal part of the heating disc control assembly. The components are connected in a sliding fit and elastic connection mode, facilitating assembly and making later maintenance and replacement more efficient.

[0025] The sleeve is moved up and down by rotating the adjusting disc, thereby changing the position state of the connecting terminal, and adjusting the heating temperature threshold. Users can select different temperatures (such as a heat preservation mode, a slow cooking mode, etc.) according to actual needs, expanding the functional application range of the electric kettle, and especially suitable for tea making, coffee brewing and other scenarios with specific water temperature requirements.

[0026] The temperature control component adopts a push head-terminal-spring linkage structure. After pressing the switch, the second push head is pushed by the limiting metal sheet to make the second connecting terminal slide along the guide groove, and the compression spring is compressed to keep the circuit in a conductive state. When the temperature rises to trigger power-off, the first connecting terminal is driven downward by the bimetallic sheet, the limiting arm is separated from the engagement groove, and the circuit is disconnected instantaneously. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 FIG. 1 is a structural schematic diagram of the electric kettle of the present application;

[0028] Figure 2 FIG. 2 is a structural schematic diagram of the internal structure of the electric kettle of the present application;

[0029] Figure 3 FIG. 3 is an enlarged structural schematic diagram of position A in FIG. 2, mainly showing the switch component; Figure 2

[0030] Figure 4 FIG. 4 is a structural schematic diagram of part of the electric kettle of the present application;

[0031] Figure 5 FIG. 5 is an enlarged structural schematic diagram of position B in FIG. 4, mainly showing the cover opening component; Figure 4

[0032] Figure 6 FIG. 6 is an enlarged structural schematic diagram of position C in FIG. 4, mainly showing the cover opening component; Figure 4

[0033] Figure 7 FIG. 7 is a structural schematic diagram of the heating disc control assembly of the present application;

[0034] Figure 8 FIG. 8 is a structural schematic diagram of the internal structure of the heating disc control assembly of the present application;

[0035] Figure 9 FIG. 9 is a sectional view of the mounting disc of the present application;

[0036] Figure 10 ​​​Structure diagram of the adjusting disc of the present application;

[0037] Figure 11 Structure diagram of the temperature control component of the present application;

[0038] Figure 12 Structure diagram of the temperature control component of the present application;

[0039] Figure 13 Structure diagram of the temperature control component of the present application;

[0040] Figure 14 Structure diagram of the temperature control component of the present application.

[0041] The reference signs are as follows: electric kettle 100, base unit 10, bottom disc 101, fixed sheet 102, upper coupler 103, kettle unit 20, kettle bottom 201, steel ring 202, heating disc 203, kettle 204, kettle body 204A, handle 204B, kettle mouth 204C, kettle cover 204D, switch component 205, first button 205A, dialing part 205B, pressing arm 205C, through slot 205D, shaft rod 205E, clamping rod 205F, limiting metal sheet 205G, cover opening component 206, second button 206A, wedge-shaped block 206B, first return spring 206C, pushing pull rod 206D, clamping rod 206E, second return spring 206F, bolt rod 206G

[0042] Heating disc control assembly 200, mounting disc 31, clamping boss 31A, screw thread 31B, clamping groove 31C, arc-shaped mounting groove 31D, heat-conducting veneer 31E, curved hollow 31F, upper shell 32, flow guide groove 33, lower shell 34, adjusting disc 35, adjusting ring 351, second adjusting screw thread 352, clamping block 353, temperature control component 36, sleeve 361, first constraint groove 361A, first adjusting screw thread 361B, constraint rod 361C, guide groove 361D, first connecting terminal 362, first push head 362A, first insulating rod 362B, first terminal 362C, second constraint groove 362D, clamping arm 362E, clamping groove 362F, second connecting terminal 363, second push head 363A, second insulating rod 363B, second terminal 363C, guide rod 363D, limiting arm 363E, compression spring 364. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0044] Embodiment one

[0045] Reference Figures 1 to 6As shown in the figure, the embodiment discloses an electric kettle 100 including a base unit 10 and a kettle unit 20. The base unit 10 and the kettle unit 20 are designed in a split type, and the base unit 10 should be responsible for power supply when the kettle unit 20 is placed on the base unit 10. The base unit 10 is externally connected with a power line connected to a power supply for AC input.

[0046] The base unit 10 is composed of a bottom plate 101, a fixed sheet 102 and an upper coupler 103. The upper coupler 103 is installed on the fixed sheet 102, and the fixed sheet 102 is connected with the bottom plate 101 through bolts. The upper coupler 103 can be disassembled and replaced as a whole after being damaged.

[0047] Referring again to Figure 1 As shown in the figure, the kettle unit 20 includes a kettle bottom 201, a steel ring 202 and a kettle 204. The kettle bottom 201 is connected with the steel ring 202 through buckles, and the steel ring 202 is also connected with the kettle 204 through buckles. The middle part of the kettle bottom 201 is provided with a lower coupler matched with the upper coupler 103, and the connection of the couplers realizes the power supply of the base unit 10 to the kettle unit 20. The kettle 204 is composed of a kettle body 204A, a handle 204B, a spout 204C and a kettle cover 204D. The bottom of the kettle body 204A is provided with a heating disc 203, and the resistance coil in the heating disc 203 will generate heat after the power is turned on, and the heat is transmitted to the inside of the kettle body 204A through the bottom of the kettle body 204A, so as to make the water boil.

[0048] Referring to Figures 2 to 3 As shown in the figure, the upper end of the handle 204B is provided with a switch component 205 for controlling the power-on of the heating disc 203. The switch component 205 includes a first button 205A rotatably connected on the handle 204B, and one end of the first button 205A is provided with a pushing part 205B. The pushing part 205B is used to control the opening and closing of a pressing arm 205C, so as to realize the control of the power-on of the heating disc 203.

[0049] Specifically, the pushing part 205B is provided with a through slot 205D, one end of the pressing arm 205C is provided with a shaft 205E, and the other end is provided with a clamping rod 205F. The shaft 205E is located inside the through slot 205C, and one side of the clamping rod 205F is provided with a limiting metal sheet 205G.

[0050] When the user turns on the power and presses the switch, the current is powered through the base unit 10, so that the heating disc 203 starts to heat. As the water temperature gradually rises, the thermal motion of the water molecules in the kettle intensifies, and finally reaches the boiling state and generates a large amount of steam. These vapors will flow through the flow guide channel under the spout or the kettle cover to the handle direction, and finally act on the bimetallic strip hidden in the kettle body or the handle. The bimetallic strip is laminated by two metals with different thermal expansion coefficients, which remains flat at room temperature, but when high-temperature steam contacts its surface, the two layers of metal will bend due to uneven heating. This deformation will trigger the limit metal sheet 205G to return to the first button 205A through the lower pressing arm 205C, instantaneously disconnecting the circuit contact and cutting off the power supply of the heating tube, thereby realizing automatic power-off.

[0051] In order to ensure safety, an over-temperature protection device is also provided, usually a fuse or a second set of bimetallic strips. If the user misoperates, for example, starts heating when there is no water in the kettle, when the temperature exceeds the set safety threshold, usually 105-120°C, the device will directly melt the circuit or forcibly pop the power contact, avoiding the risk of fire caused by dry burning. It should be noted that after the mechanical temperature controller is powered off, the bimetallic strip needs to be cooled and reset, about 1-2 minutes, before the heating can be started again.

[0052] Preferably, referring to Figures 4 to 6 As shown in the figure, the top of the handle 204B is also provided with an uncapping component 206 for controlling the opening and closing of the kettle cover 204D, and the uncapping component 206 comprises a second button 206A, and a wedge-shaped block 206B is fixedly connected below the second button 206A. The second button 206A and the wedge-shaped block 206B can move up and down along the handle 204B, and the bottom of the wedge-shaped block 206B is provided with a first reset spring 206C.

[0053] Wherein, the wedge-shaped block 206B is attached to one end of the pull rod 206D, and when the wedge-shaped block 206B moves downward, it can drive the pull rod 206D to move rightward (as shown by the arrow direction in Figure 5 The other end of the pull rod 206D is fixedly connected with a clamping rod 206E, the clamping rod 206E is provided with a second reset spring 206F, and one end of the clamping rod 206E is connected with a latch rod 206G.

[0054] A torsion spring is arranged between the kettle cover 204D and the handle 204B. When the kettle cover 204D is in a closed state, the latch rod 206G cooperates with the kettle cover 204D and limits its reset under the action of the torsion spring; when the second button 206A is pressed, the wedge-shaped block 206B pushes the pull rod 206D, the clamping rod 206E and the latch rod 206G to move rightward, forcing the latch rod 206G to separate from the kettle cover 204D. At this time, the kettle cover 204D is opened and reset under the action of the torsion spring.

[0055] Further, the circuit will be disconnected immediately after the water is boiled, and the water cannot be boiled for a long time when tea is needed, and the temperature cannot be adjusted each time.

[0056] Embodiment Two

[0057] In this embodiment, an electric kettle 100 includes a base unit 10 and a kettle unit 20. Referring again to Figure 1 Again Figure 6 As shown in the figure, the kettle unit 20 includes a kettle bottom 201, a steel ring 202, and a kettle 204. The kettle bottom 201 is connected to the steel ring 202 by a buckle, and the steel ring 202 is also connected to the kettle 204 by a buckle. The middle part of the kettle bottom 201 is provided with a lower coupler that matches the upper coupler 103, and the connection of the couplers realizes the power supply of the base unit 10 to the kettle unit 20. Among them, the kettle 204 is composed of a kettle body 204A, a handle 204B, a spout 204C, and a kettle cover 204D. The bottom of the kettle body 204A is provided with a heating disc 203. After the power is turned on, the resistance coil in the heating disc 203 will generate heat, and the heat will be transmitted to the water inside the kettle body 204A through the bottom of the kettle body 204A, so as to make the water boil.

[0058] Referring to Figures 2 to 3 As shown in the figure, the upper end of the handle 204B is provided with a switch component 205, which is used to control the power-on of the heating disc 203. The switch component 205 includes a first button 205A, which is rotatably connected to the handle 204B, and one end of the first button 205A is provided with a knob 205B. The knob 205B is used to control the opening and closing of a pressing arm 205C, so as to realize the control of whether the heating disc 203 is powered on.

[0059] Specifically, the knob 205B is provided with a through slot 205D, one end of the pressing arm 205C is provided with a shaft 205E, and the other end is provided with a clamping rod 205F. Among them, the shaft 205E is located inside the through slot 205C, and one side of the clamping rod 205F is provided with a limiting metal sheet 205G.

[0060] Referring to Figures 7 to 14As shown, the embodiment also proposes a heating disc control assembly 200, which comprises a mounting disc 31, an upper shell 32, a flow guide groove 33, a lower shell 34 and an adjusting disc 35 connected in sequence. The heating disc control assembly 200 is mounted at the bottom of the kettle body 204A through the mounting disc 31, and is located at the middle part of the heating disc 203. The mounting disc 31 comprises a clamping boss 31A, the inner diameter of the clamping boss 31A is provided with a thread 31B, and one side of the clamping boss 31A is provided with a clamping groove 31C. The clamping boss 31A is quickly disassembled through the thread 31B and the clamping groove 31B. The mounting disc 31 further comprises a heat-conducting veneer 31E, and both sides of the heat-conducting veneer 31E are provided with arc-shaped mounting grooves 31D. The bimetallic strip penetrates through the two arc-shaped mounting grooves 31D, and the mounting disc 31 is further provided with a curved hollow 31F. The bimetallic strip can be bent in the curved hollow 31F.

[0061] Preferably, the flow guide groove 33 is attached to the inside of the upper shell 32, which is used for rapid cooling and resetting of the bimetallic strip.

[0062] In the embodiment, referring again to Figures 11 to 14 As shown, the middle part of the flow guide groove 33 is further provided with a temperature control component 36, which is electrically connected with the circuit of the heating disc 203 and controls the power-on of the heating disc 203. Referring to Figure 12 As shown, the temperature control component 36 is in an initial state, and the circuit is not turned on; referring to Figure 13 As shown, the temperature control component 36 is in a closed state, and the circuit is turned on.

[0063] The temperature control component 36 is composed of a sleeve 361, a first connecting terminal 362, a second connecting terminal 363 and a compression spring 364. The outer side wall of the sleeve 361 is provided with a first constraint groove 361A, and the inner side wall is provided with a constraint rod 361C. The lower end of the sleeve 361 is provided with a first adjusting thread 361B. The first constraint groove 361A cooperates with the middle part of the flow guide groove 33 and can move up and down on the flow guide groove 33. The outer side wall of the sleeve 361 is further provided with a guide groove 361D.

[0064] Referring again to Figure 1 and Figure 10 As shown, the adjusting disc 35 is rotationally connected at the bottom of the lower shell 34. The middle part of the adjusting disc 35 is provided with a second adjusting thread 352, and the first adjusting thread 361B cooperates with the second adjusting thread 352. Rotating the adjusting disc 35 can make the sleeve 361 move up and down. The circumferential direction of the adjusting disc 35 is further provided with a plurality of clamping blocks 353, which are connected with the adjusting ring 351 through the clamping blocks 353. The adjusting ring 351 is rotationally connected at the outer ring of the bottom of the kettle body 204A.

[0065] The compression spring 364 is arranged between the first connecting terminal 362 and the second connecting terminal 363. The first connecting terminal 362 is composed of a first push head 362A, a first insulating rod 362B and a first terminal 362C. The second connecting terminal 363 is composed of a second push head 363A, a second insulating rod 363B and a second terminal 363C.

[0066] The outer side of the first terminal 362C is provided with a second constraint groove 362D, which cooperates with the constraint rod 361C, and the first connecting terminal 362 can slide on the sleeve 361. The lower side of the first terminal 362C is provided with a clamping arm 362E, and the inner side of the clamping arm 362E is provided with a clamping groove 362F.

[0067] The two sides of the second terminal 363C are provided with guide rods 363D, and the upper end of the second terminal 363C is provided with a limiting arm 363E. The guide rods 363D are installed in the guide grooves 361D, so that the second terminal 363C can slide in the guide grooves 361D. During the sliding process, the guide grooves 361D can cause the second terminal 363C to deflect.

[0068] Referring to Figure 3 and Figure 4 The limiting metal sheet 205G penetrates the handle 204B and is connected to the bottom of the kettle body 204A. When the switch component 205 is pressed, the limiting metal sheet 205G contacts the second push head 363A and lifts the second connecting terminal 363, which slides along the guide grooves 361D from the F1 segment to the F3 segment, and the compression spring 364 is compressed. At this time, the circuit is turned on. Because the limiting arm 363E and the clamping groove 362F are mutually clamped, the compression spring 364 cannot be reset.

[0069] When the water temperature starts to rise, the bimetallic sheet arranged on the mounting disc 31 is bent and drives the first connecting terminal 362 and the second connecting terminal 363 to move downward. The second connecting terminal 363 slides along the F3 segment to the F1 segment and deflects, and at this time the limiting arm 363E and the clamping groove 362F are separated under the action of the compression spring 364, and the circuit is disconnected.

[0070] Further, after being powered on, the sleeve 361 is driven to move up and down by the adjusting disc 35, so as to adjust the set temperature. The uppermost end of the guide rod 363D in the F3 segment is the set maximum temperature, and the lowermost end of the guide rod 363D in the F3 segment is the set minimum temperature. When the maximum temperature is set, the bimetallic sheet needs to be bent and deformed more; when the minimum temperature is set, the bimetallic sheet needs to be bent and deformed less.

[0071] The above merely provides the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall fall in the protection scope of the present application.

Claims

1. A heat disc control assembly, characterized in that, The installation disc, the adjusting disc and the temperature control component are connected through the bimetallic strip, The temperature control component is composed of a sleeve, a first connecting terminal, a second connecting terminal and a compression spring, the lower end of the sleeve is provided with a first adjusting screw, and the adjusting disc controls the up-and-down movement of the sleeve, The outer side wall of the sleeve is further provided with a guide groove, the compression spring is arranged between the first connecting terminal and the second connecting terminal, the first connecting terminal is composed of a first push head, a first insulating rod and a first terminal, the second connecting terminal is composed of a second push head, a second insulating rod and a second terminal, The lower side of the first terminal is provided with a clamping arm, the inner side of the clamping arm is provided with a clamping groove, the two sides of the second terminal are provided with guide rods, the upper end of the second terminal is provided with a limiting arm, and the guide rods are arranged in the guide groove, so that the second terminal can slide in the guide groove, The installation disc includes a clamping boss, the inner diameter of the clamping boss is provided with a screw, and one side of the clamping boss is provided with a clamping groove, The installation disc further includes a heat-conducting veneer, the two sides of the heat-conducting veneer are provided with arc-shaped installation grooves, and the bimetallic strip is connected through the two arc-shaped installation grooves, During the sliding of the guide rod in the guide groove, the guide groove causes the second terminal to deflect, The middle part of the adjusting disc is provided with a second adjusting screw, the first adjusting screw cooperates with the second adjusting screw, the rotation of the adjusting disc causes the up-and-down movement of the sleeve, and the adjusting disc is further provided with a plurality of clamping blocks in the circumferential direction.

2. The heat disc control assembly according to claim 1, wherein, The guide groove is composed of F1, F2 and F3 sections, when passing through the F2 section, the second terminal deflects.

3. The heat disc control assembly according to claim 2, wherein, After being powered on, the guide rod has a set maximum temperature at the uppermost end of the F3 section, and has a set minimum temperature at the lowermost end of the F3 section.

4. An electric kettle comprising the heating disc control assembly according to claim 1, characterized in that, The base unit and the kettle unit are further included, The base unit is composed of a bottom disc, a fixing sheet and an upper coupler, the kettle unit includes a kettle bottom, a steel ring and a kettle, the kettle bottom is connected with the steel ring through buckles, the steel ring is also connected with the kettle through buckles, and the middle part of the kettle bottom is provided with a lower coupler matched with the upper coupler, The kettle is composed of a kettle body, a handle, a spout and a kettle cover, and a heating disc is arranged at the bottom of the kettle body A.

5. The electric kettle according to claim 4, wherein The upper end of the handle is provided with a switch component, the switch component is used for controlling the power-on of the heating disc, and the switch component includes a first button, one end of the first button is rotatably connected with the handle, and the first button is provided with a knob at one end.

6. The electric kettle according to claim 5, wherein The knob is provided with a through groove, one end of the lower pressing arm is provided with a shaft rod, and the other end is provided with a clamping rod, wherein the shaft rod is located in the through groove, and one side of the clamping rod is provided with a limiting metal sheet.

7. The electric kettle according to claim 4, wherein The top of the handle is further provided with an un-covering component, and the un-covering component is used for controlling the opening and closing of the kettle cover, The un-covering component includes a second button, and the lower side of the second button is fixedly connected with a wedge-shaped block, the second button and the wedge-shaped block move up and down along the handle, and the bottom of the wedge-shaped block is provided with a first reset spring.

8. The electric kettle according to claim 7, characterized in that The wedge-shaped block is attached to one end of the pull rod, when the wedge-shaped block moves downward, the pull rod can be driven to move rightward, the other end of the pull rod is fixedly connected with a clamping rod, the clamping rod is provided with a second reset spring, and one end of the clamping rod is connected with a latch rod.

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