Support for mounting temperature control switch, fuser, and image forming apparatus

Abstract

The application discloses a support for installing a temperature control switch, a fixing device and an image forming device, and relates to the technical field of image forming. The support comprises a support main body and a first limiting part. The support main body is used for installing the temperature control switch. The first limiting part comprises a first clamping jaw and a second clamping jaw. The first clamping jaw is arranged on a first side of the support main body in a third direction, and the second clamping jaw is arranged on a second side of the support main body in the opposite direction of the third direction. The connecting line of the first clamping jaw and the second clamping jaw is not perpendicular to the third direction. The first clamping jaw cooperates with the second clamping jaw to limit the temperature control switch in the opposite direction of the first direction when the temperature control switch is installed on the support main body in the first direction. The application limits the temperature control switch in the opposite direction of the first direction after the temperature control switch is installed on the support main body in the first direction through the first clamping jaw and the second clamping jaw, so that the temperature control switch is fixed at an effective detection position on a ceramic sheet support, thereby improving the response accuracy of the temperature control switch.

Description

Technical Field

[0001] This invention relates to the field of image forming technology, and more particularly to a bracket for mounting a temperature control switch, a fuser, and an image forming apparatus. Background Technology

[0002] The fuser contains a heating element, and around or inside the heating element, there are usually safety devices for monitoring the temperature, such as temperature control switches and fuses, as well as heat-sensing elements that detect and provide feedback on the temperature, such as thermistors.

[0003] To enhance product safety, the fuser unit employs dual temperature control switches and dual thermistors. The dual temperature control switches monitor the temperature of the heating element, and melt down when the set operating temperature is reached to prevent potential safety hazards. The main thermistor detects and provides feedback on the current actual temperature, while the side thermistor assists in monitoring and prevents abnormal temperature rises.

[0004] Currently, the temperature control switch cannot be fixed at an effective detection position on the ceramic plate bracket, resulting in low response accuracy of the temperature control switch. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a bracket, fuser and image forming device for mounting a temperature control switch, to solve the problem that the temperature control switch cannot be fixed in an effective detection position on the ceramic plate bracket, and to improve the response accuracy of the temperature control switch.

[0006] According to a first aspect of the present invention, a bracket for mounting a temperature control switch is provided, comprising: A bracket body for mounting at least one temperature control switch, the temperature control switch having a first end and a second end in the length direction, wherein at least one of the temperature control switches is mounted on the bracket body along the first direction; At least one first limiting part, the first limiting part including a first claw and a second claw, the first claw being disposed on a first side of the bracket body in a third direction, the second claw being disposed on a second side of the bracket body in the opposite direction of the third direction, the line connecting the first claw and the second claw not being perpendicular to the third direction, the first claw and the second claw forming a diagonal relationship in both the third direction and the second direction, the first claw cooperating with the second claw to limit the temperature control switch in the opposite direction of the first direction when the temperature control switch is installed on the bracket body; The first claw is used to limit the first end of the temperature control switch in the opposite direction of the first direction, and the second claw is used to limit the second end of the temperature control switch in the opposite direction of the first direction.

[0007] The bracket for mounting a temperature control switch of the present invention uses a first claw and a second claw on the bracket body to limit the temperature control switch in the opposite direction after it is mounted in the bracket body in a first direction, so that the temperature control switch is fixed in an effective detection position on the ceramic plate bracket, thereby improving the response accuracy of the temperature control switch.

[0008] In some embodiments, the support body has a groove and a plurality of pressing parts on one side in the first direction, the groove extending along the length of the support body, and the plurality of pressing parts being distributed sequentially along the length of the support body.

[0009] In some embodiments, the bracket body is provided with at least one mounting portion, and at least one of the mounting portions is used to mount at least one of the temperature control switches.

[0010] In some embodiments, the mounting portion has multiple sidewalls for limiting the temperature control switch in directions other than the opposite direction of the first direction.

[0011] According to a second aspect of the present invention, a fuser is provided, the fuser including a heating assembly, the heating assembly comprising: The bracket for mounting the temperature control switch as described in any of the first aspects; Heating element, the heating element being used to heat the fixing film; A first bracket is used to mount the heating element, and the main body of the bracket is mounted on the first bracket in the opposite direction to the first direction. A second bracket is used to mount at least one heat-sensing element. The second bracket is mounted on the first bracket in the opposite direction to the first direction so that the heat-sensing element contacts the heating element. The first bracket is provided with at least one first through hole, and the first through hole is provided with a first partition. When the bracket body is installed on the first bracket in the opposite direction of the first direction, the temperature control switch faces the heating element through the first through hole, and the temperature control switch and the heating element are separated by the first partition. The second bracket includes a spring portion for applying force to the heat-sensing element in the opposite direction to the first direction, so as to press the heat-sensing element against the heating element.

[0012] In some embodiments, the support body has a first end and a second end in the length direction, and the first support includes: The second limiting part is used to limit the first end of the bracket body in the first direction; At least one first latch, wherein at least one first latch is used to limit the second end of the bracket body in the first direction.

[0013] In some embodiments, the second bracket has a first end, a connecting portion, and a second end sequentially along its length, and the first bracket further includes: The third limiting part is used to limit the second end of the second bracket in the first direction; At least one second latch, the at least one second latch being used to limit the first end of the second bracket and / or the connecting portion of the second bracket in the first direction.

[0014] According to a third aspect of the present invention, an image forming apparatus is provided, the image forming apparatus including the aforementioned fuser.

[0015] Compared with the prior art, the bracket, fuser, and image forming apparatus for mounting the temperature control switch of the present invention, by using the first and second claws on the bracket body to limit the temperature control switch in the opposite direction after it is mounted on the bracket body in the first direction, fixes the temperature control switch at an effective detection position on the ceramic plate bracket, thereby improving the response accuracy of the temperature control switch. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the fuser according to an embodiment of the present invention; Figure 2 This is a front view of a fuser according to an embodiment of the present invention; Figure 3 This is a cross-sectional view of a fuser according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the heating assembly in a fuser according to an embodiment of the present invention. Figure 5 This is a schematic diagram of the structure of a temperature control switch installed on the bracket body according to an embodiment of the present invention from a first perspective. Figure 6 This is a schematic diagram of a temperature control switch not installed on the bracket body according to one embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of a temperature control switch installed on the bracket body according to an embodiment of the present invention from a second perspective. Figure 8 for Figure 7 Enlarged view of section A; Figure 9 This is a schematic diagram of the temperature control switch installed on the bracket body according to an embodiment of the present invention from a third perspective. Figure 10This is a schematic diagram of the structure of the support body and the second support installed on the first support according to one embodiment of the present invention; Figure 11 This is a cross-sectional view of a portion of the structure of a first type of bracket body installed on a first bracket according to an embodiment of the present invention. Figure 12 This is a cross-sectional view of a second type of structure in which the support body of an embodiment of the present invention is installed on a first support; Figure 13 This is a cross-sectional view of a portion of the structure of a second bracket installed on a first bracket according to an embodiment of the present invention.

[0017] Reference numerals in the attached drawings: Fuser 100, fuser body 110, pressure roller 120, heating assembly 130, fuser film 131, pressure assembly 140; bracket 200, bracket body 210, mounting part 211, bottom side wall 211a, right side wall 211b, first through part 211b1, left side wall 211c, second through part 211c1, front side wall 211d, rear side wall 211e, first limiting part 212, first claw 212a, second claw 212b, wire groove 2 13, pressing part 214, temperature control switch 300, temperature control switch body 310, abutting part 320, first connecting part 330, second connecting part 340, third connecting part 350, connecting wire 360, first bracket 400, second limiting part 410, first buckle 420, first through hole part 430, first separating part 440, third limiting part 450, second buckle 460, second through hole part 470, heating element 500, second bracket 600, spring part 610, heat-sensing element 700. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings.

[0019] This invention provides an image forming device, such as a copier, printer, fax machine, multifunction printer, etc. Figure 1-3 As shown, the image forming apparatus includes a fuser 100, which includes a fuser body 110, a pressure roller 120, a heating assembly 130, and a pressure assembly 140.

[0020] like Figure 3 As shown, the pressure roller 120 is supported at both ends of the fuser body 110 in the length direction. The length direction of the pressure roller 120 is parallel to the length direction of the fuser body 110. The pressure roller 120 can rotate under the drive of the drive assembly (not shown) of the image forming apparatus. The rotation axis of the pressure roller 120 is parallel to the length direction of the pressure roller 120.

[0021] like Figure 3 and Figure 4As shown, the heating assembly 130 is supported at both ends of the fuser body 110 in the length direction. The length direction of the heating assembly 130 is parallel to the length direction of the pressure roller 120. The heating assembly 130 includes a flexible, rotatable cylindrical fuser film 131. The pressure assembly 140 is disposed on the fuser body 110 and located on the side of the heating assembly 130 away from the pressure roller 120. Under the pressure of the pressure assembly 140, the heating assembly 130 is pressed against the pressure roller 120, so that the fuser film 131 of the heating assembly 130 abuts against the pressure roller 120. When the pressure roller 120 is driven to rotate, the fuser film 131 of the heating assembly 130 that abuts against the pressure roller 120 will rotate together. The printing media such as paper is clamped and transported by the pressure roller 120 and the fuser film 131 of the heating assembly 130, and the toner image on the printing media is heated by the heating assembly 130 to fix it onto the printing media, thereby completing the fixing operation.

[0022] like Figure 10 , Figure 12 and Figure 13 As shown, the heating assembly 130 also includes a bracket 200 for mounting a temperature control switch, a temperature control switch 300, a first bracket 400, a heating element 500, a second bracket 600, and a heat-sensing element 700, wherein the bracket 200, the temperature control switch 300, the first bracket 400, the heating element 500, the second bracket 600, and the heat-sensing element 700 are disposed within the fixing film 131.

[0023] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the bracket 200 includes a bracket body 210, which is used to install at least one temperature control switch 300. Specifically, the bracket body 210 is provided with at least one mounting part 211, which is used to install at least one temperature control switch 300. In this embodiment, taking two temperature control switches 300 as an example, the bracket body 210 is provided with two mounting parts 211. The two mounting parts 211 are arranged sequentially along the length direction of the bracket body 210. The two temperature control switches 300 are respectively installed in the two mounting parts 211 of the bracket body 210 along the first direction X. The first direction X is parallel to the thickness direction of the bracket body 210 and perpendicular to the length direction of the bracket body 210.

[0024] like Figure 6As shown, the temperature control switch 300 has a temperature control switch body 310 and an abutment portion 320 disposed on one side of the temperature control switch body 310 in the opposite direction of the first direction X. The abutment portion 320 is approximately located in the middle of the temperature control switch body 310. A first connecting portion 330 is disposed on the temperature control switch body 310 in the second direction Y, and a second connecting portion 340 is disposed in the opposite direction of the second direction Y. The first connecting portion 330 of one of the two temperature control switches 300 is connected to the second connecting portion 340 of the other temperature control switch 300 through a third connecting portion 350. The third connecting portion 350 is made of metal material, and this material is preferably the same as or equivalent to the metal material on the temperature control switch 300.

[0025] like Figure 6 , Figure 7 and Figure 8 As shown, the mounting part 211 has multiple sidewalls, which are used to limit the temperature control switch 211 in directions other than the opposite direction of the first direction X. Specifically, the multiple sidewalls sequentially include a bottom sidewall 211a located in the first direction X, a right sidewall 211b located in the second direction Y, the right sidewall 211b having a first through-hole 211b1, the first through-hole 211b1 penetrating the right sidewall 211b in the longitudinal direction of the bracket body 210 and in the opposite direction of the first direction X, a left sidewall 211c located in the opposite direction of the second direction Y, the left sidewall 211c having a second through-hole 211c1, the second through-hole 211c1 penetrating the left sidewall 211c in the longitudinal direction of the bracket body 210 and in the opposite direction of the first direction X, a front sidewall 211d located in the third direction Z, and a rear sidewall 211 in the opposite direction of the third direction Z. e, wherein the first direction X, the second direction Y, and the third direction Z are perpendicular to each other, the second direction Y is parallel to the length direction of the bracket body 210, and the third direction Z is parallel to the width direction of the bracket body 210; after the temperature control switch 300 is installed in the mounting part 211 of the bracket body 210 along the first direction X, the bottom side wall 211a, right side wall 211b, left side wall 211c, front side wall 211d, and rear side wall 211e of the mounting part 211 limit the temperature control switch body 310 of the temperature control switch 300 in the first direction X, the second direction Y, the opposite direction of the second direction Y, the third direction Z, and the opposite direction of the third direction Z in sequence; the first connecting part 330 of the temperature control switch 300 penetrates the first penetrating part 211b1 in the second direction Y, and the second connecting part 340 of the temperature control switch 300 penetrates the second penetrating part 211c1 in the opposite direction of the second direction Y.

[0026] like Figure 7 and Figure 8As shown, the bracket body 210 is also provided with at least one first limiting part 212. The at least one first limiting part 212 is used to limit at least one temperature control switch 300 in the opposite direction of the first direction X when at least one temperature control switch 300 is installed in the mounting part 211 of the bracket body 210. In this embodiment, taking two temperature control switches 300 as an example, the bracket body 210 is provided with two first limiting parts 212. The two first limiting parts 212 are arranged sequentially on the bracket body 210 along the length direction of the bracket body 210. The two first limiting parts 212 limit different temperature control switches 300 in the opposite direction of the first direction X respectively.

[0027] like Figure 7 and Figure 8 As shown, the first limiting part 212 includes a first claw 212a and a second claw 212b. The first claw 212a is disposed on a first side of the bracket body 210 in the third direction Z, and the second claw 212b is disposed on a second side of the bracket body 210 in the opposite direction Z. The line connecting the first claw 212a and the second claw 212b is not perpendicular to the third direction Z. The first claw 212a and the second claw 212b form a diagonal relationship in both the third direction Z and the second direction Y. The first claw 212a cooperates with the second claw 212b to install the temperature control switch 300 on the bracket body 212. At 10 o'clock, the temperature control switch 300 is limited in the opposite direction of the first direction X. The first claw 212a and the second claw 212b restrict the movement of the temperature control switch 300 in the opposite direction of the first direction X. The bracket body 210 uses two pairs of claws in the diagonal direction to fix the two temperature control switches 300. This can lock the two connected temperature control switches 300 and prevent them from falling out during assembly. Together with the mounting part 211, the temperature control switches 300 are fixed in all directions. This structure is conducive to the temperature control switches 300 being installed more stably on the bracket body 210 and is also convenient for production line employees to assemble.

[0028] Furthermore, the temperature control switch body 310 of the temperature control switch 300 has a first end and a second end in the length direction. The length direction of the temperature control switch body 310 is parallel to the second direction Y. The first end of the temperature control switch body 310 in the opposite direction of the second direction Y is connected to the second connecting part 340, and the second end of the temperature control switch body 310 in the second direction Y is connected to the first connecting part 330. The first claw 212a is used to limit the first end of the temperature control switch body 310 of the temperature control switch 300 in the opposite direction of the first direction X, and the second claw 212b is used to limit the second end of the temperature control switch body 310 of the temperature control switch 300 in the opposite direction of the first direction X.

[0029] like Figure 9As shown, the bracket body 210 has a wire groove 213 and multiple pressing parts 214 on one side in the first direction X. The wire groove 213 extends along the length direction of the bracket body 210, and the multiple pressing parts 214 are distributed sequentially in the length direction of the bracket body 210. The length direction of the bracket body 210 is parallel to the second direction Y. The pressing parts 214 can be wire clips, and the multiple wire clips can be single or in groups of two, and are distributed sequentially in the length direction of the bracket body 210. The connecting wire 360 ​​of the temperature control switch 300 is assembled in the wire groove 213 of the bracket body 210 by winding and interference fit, and the multiple pressing parts 214 further fix the connecting wire 360 ​​of the temperature control switch 300 in the wire groove 213 to prevent the connecting wire 360 ​​of the temperature control switch 300 from coming out of the wire groove 213.

[0030] like Figure 11 , Figure 12 and Figure 13 As shown, the first bracket 400 is used to mount the heating element 500, which is used to heat the fixing film 131. The heating element 500 is a heating ceramic sheet. The length, width, and thickness directions of the first bracket 400 are parallel to the length, width, and thickness directions of the bracket body 210, respectively. The heating element 500 is installed on the side of the first bracket 400 opposite to the first direction X, and the length direction of the heating element 500 is parallel to the length direction of the first bracket 400. The heating element 500 can slide relative to the inner circumferential surface of the fixing film 131 of the heating assembly 130. The heating element 500 heats the fixing film 131, and the heated fixing film 131 heats the toner image on the printing medium to fix the toner image on the printing medium, thereby completing the fixing operation.

[0031] like Figure 12As shown, after the temperature control switch 300 is installed in the mounting portion 211 of the bracket body 210, the bracket body 210 is then installed on the first bracket 400 in the opposite direction of the first direction X. Specifically, the first bracket 400 includes a second limiting portion 410 and at least one first latch 420. The second limiting portion 410 and at least one first latch 420 are located on one side of the first bracket 400 in the first direction X. The second limiting portion 410 and at least one first latch 420 are close to the second end of the first bracket 400 in the second direction Y. In this embodiment, taking one first latch 420 as an example, the first latch 420 is closer to the second end of the first bracket 400 in the second direction Y than the second limiting portion 410. The bracket body 210 has a first end and a second end in the length direction. The length direction of the support body 210 is parallel to the second direction Y. When the support body 210 is installed on the first support 400 in the opposite direction of the first direction X, the first end of the support body 210 in the opposite direction of the second direction Y is inserted into the second limiting part 410 of the first support 400. The second limiting part 410 is used to limit the first end of the support body 210 in the first direction X. The second end of the support body 210 in the second direction Y is pressed into the first buckle 420 on the first support 400. The first buckle 420 is used to limit the second end of the support body 210 in the first direction X, thereby installing the support body 210 on the first support 400. The above structure is conducive to the more stable installation of the support body 210 on the first support 400, and also facilitates the assembly by production line employees.

[0032] like Figure 11As shown, the first bracket 400 is provided with at least one first through hole 430, which penetrates the first bracket 400 in the first direction X, allowing a portion of the heating element 500 to be exposed through the first through hole 430. The first through hole 430 is provided with two first partitions 440, which are arranged sequentially along the length of the first bracket 400. The first partitions 440 are ribs, and their thickness in the first direction X is between 0.2-2 mm. In this embodiment, taking two temperature control switches 300 as an example, the first bracket 400 is provided with two first through holes 430, which are arranged sequentially along the length of the first bracket 400. The bracket body 210 is installed in the opposite direction of the first direction X. When the first support 400 is in place, the contact portion 320 of the temperature control switch 300 faces the heating element 500 through the first through hole portion 430 in the opposite direction of the first direction X. At this time, the contact portion 320 of the temperature control switch 300 and the heating element 500 are separated by the first separation portion 440 of the first through hole portion 430 in the opposite direction of the first direction X. Thus, the contact portion 320 of the temperature control switch 300 cannot directly contact the heating element 500 in the opposite direction of the first direction X. This achieves the effect of the temperature control switch 300 not directly contacting the heating element 500, avoiding the problem of the temperature control switch 300 absorbing some of the heat from the heating element 500 when it directly contacts the heating element 500, resulting in a local low temperature of the heating element 500 and causing the image to be poorly fixed. At the same time, the first through hole portion 430 can be used to monitor the ambient air temperature. In an alternative embodiment, the first through hole portion 430 may not have the first separating portion 440 provided, and instead the abutting portion 320 of the temperature control switch 300 may directly contact the heating element 500 through the first through hole portion 430.

[0033] like Figure 13 As shown, the second bracket 600 is used to mount at least one thermal element 700, which is a thermistor. The length, width, and thickness directions of the second bracket 600 are parallel to the length, width, and thickness directions of the first bracket 400, respectively. In this embodiment, two thermal elements 700 are used as an example. The two thermal elements 700 are mounted on the second bracket 600 along the first direction X. After being mounted on the second bracket 600, the two thermal elements 700 are distributed sequentially along the second direction Y. The way the two thermal elements 700 are mounted on the second bracket 600 can be referred to the way the temperature control switch 300 is mounted on the bracket body 210, so it will not be described again here.

[0034] like Figure 13As shown, after the heating element 700 is installed on the second bracket 600, the second bracket 600 is then installed on the first bracket 400 in the opposite direction of the first direction X, so that the heating element 700 contacts the heating element 500. Specifically, the first bracket 400 also includes a third limiting part 450 and at least one second buckle 460. The third limiting part 450 and at least one second buckle 460 are located on one side of the first bracket 400 in the first direction X, and the third limiting part 450 and at least one second buckle 460 are close to the first end of the first bracket 400 in the opposite direction of the second direction Y. In this embodiment, two second buckles 460 are taken as an example. The two second buckles 460 and the third limiting part 450 are distributed sequentially on the first bracket 400 in the second direction Y. The second bracket 600 has a first end, a connecting part and a second end in the length direction. The connecting part of the second bracket 600 is used to connect the first end of the second bracket 600 and the second end of the second bracket 600. The length of the second bracket 600 is... When the second bracket 600 is installed on the first bracket 400 in the opposite direction of the first direction X, parallel to the second direction Y, the second end of the second bracket 600 in the second direction Y is engaged in the third limiting part 450 of the first bracket 400. The third limiting part 450 is used to limit the second end of the second bracket 600 in the first direction X. The connecting part of the second bracket 600 is pressed into one of the second latches 460 on the first bracket 400. The second latch 460 is used to limit the connecting part of the second bracket 600 in the first direction X. The first end of the second bracket 600 in the opposite direction of the second direction Y is pressed into another second latch 460 on the first bracket 400. The second latch 460 is used to limit the first end of the second bracket 600 in the first direction X. Thus, the second bracket 600 is installed on the first bracket 400. The above structure is conducive to the more stable installation of the second bracket 600 on the first bracket 400, and also facilitates the assembly by production line workers. In one alternative embodiment, the second latch 460 that limits the connecting portion of the second bracket 600 in the first direction X may be located at the connection between the connecting portion of the second bracket 600 and the first end of the second bracket 600. Therefore, the second latch 460 can also limit the first end of the second bracket 600 in the first direction X. Similarly, the second latch 460 may also be located at the connection between the connecting portion of the second bracket 600 and the second end of the second bracket 600, thereby limiting the second end of the second bracket 600.

[0035] like Figure 13As shown, the first bracket 400 is provided with at least one second through hole 470. The second through hole 470 penetrates the first bracket 400 in the first direction X, so that part of the heating element 500 is exposed through the second through hole 470. In this embodiment, taking two heat sensing elements 700 as an example, the first bracket 400 is provided with two second through holes 470. The two second through holes 470 are arranged sequentially on the first bracket 400 along the length direction of the first bracket 400. When the second bracket 600 is installed on the first bracket 400 in the opposite direction of the first direction X, the heat sensing element 700 abuts against the heating element 500 in the opposite direction of the first direction X through the second through hole 470. The heat sensing element 700 monitors the temperature of the heating element 500 and the temperature around the heating element 500 through the second through hole 470. In one alternative embodiment, the second through-hole portion 470 can be provided with a partition portion like the first through-hole portion 430. The partition portion separates the heating element 700 and the heating element 500 in the opposite direction of the first direction X. Thus, the heating element 700 cannot directly contact the heating element 500 in the opposite direction of the first direction X. This achieves the goal that the heating element 700 does not directly contact the heating element 500, avoiding the problem of the heating element 700 absorbing some of the heat from the heating element 500 when it directly contacts the heating element 500, resulting in a local low temperature of the heating element 500 and causing poor image fixing. At the same time, the second through-hole portion 470 can be used to monitor the temperature of the heating element 500.

[0036] like Figure 13 As shown, the second bracket 600 also includes a spring portion 610. In this embodiment, taking two heating elements 700 as an example, there are two spring portions 610. The two spring portions 610 are arranged sequentially on the second bracket 600 along the length direction of the second bracket 600. The spring portion 610 is used to apply force to the heating element 700 in the opposite direction of the first direction X to press the heating element 700 against the heating element 500. At this time, the two second buckles 460 on the first bracket 400 can make the installation of the second bracket 600 more secure, thereby solving the problem of the second bracket 600 arching due to the elasticity of the spring portion 610.

[0037] In this embodiment, the first claw 212a and the second claw 212b on the bracket body 210 limit the temperature control switch 300 in the opposite direction of the first direction X after the temperature control switch 300 is installed in the bracket body 210 along the first direction X, so that the temperature control switch 300 is fixed in an effective detection position on the ceramic plate bracket (i.e., the first bracket 400), thereby improving the response accuracy of the temperature control switch 300.

[0038] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A fuser, characterized in that, Includes a heating assembly, the heating assembly comprising: A bracket for mounting a temperature control switch includes a bracket body and at least one first limiting portion. The bracket body is used to mount at least one temperature control switch, which has a first end and a second end in the length direction. At least one temperature control switch is mounted on the bracket body along a first direction. The first limiting portion includes a first claw and a second claw. The first claw is disposed on a first side of the bracket body in a third direction, and the second claw is disposed on a second side of the bracket body in the opposite direction of the third direction. The line connecting the first claw and the second claw is not perpendicular to the third direction. The first claw and the second claw form a diagonal relationship in both the third and second directions. The first claw, in conjunction with the second claw, limits the temperature control switch in the opposite direction of the first direction when it is mounted on the bracket body. The first claw limits the first end of the temperature control switch in the opposite direction of the first direction, and the second claw limits the second end of the temperature control switch in the opposite direction of the first direction. The heating assembly also includes: Heating element, the heating element being used to heat the fixing film; A first bracket is used to mount the heating element, and the main body of the bracket is mounted on the first bracket in the opposite direction to the first direction. A second bracket is used to mount at least one heat-sensing element. The second bracket is mounted on the first bracket in the opposite direction to the first direction so that the heat-sensing element is in contact with the heating element. The first bracket is provided with at least one first through hole, and the first through hole is provided with a first partition. When the bracket body is installed on the first bracket in the opposite direction of the first direction, the temperature control switch faces the heating element through the first through hole, and the temperature control switch and the heating element are separated by the first partition. The second bracket includes a spring portion for applying force to the heat-sensing element in the opposite direction to the first direction, so as to press the heat-sensing element against the heating element.

2. The fuser according to claim 1, characterized in that, The bracket body has a groove and a plurality of pressing parts on one side in the first direction. The groove extends along the length of the bracket body, and the plurality of pressing parts are distributed sequentially along the length of the bracket body.

3. The fuser according to claim 1, characterized in that, The bracket body is provided with at least one mounting part, and at least one mounting part is used to install at least one of the temperature control switches.

4. The fuser according to claim 3, characterized in that, The mounting portion has multiple sidewalls, which are used to limit the temperature control switch in directions other than the opposite direction of the first direction.

5. The fuser according to claim 1, characterized in that, The support body has a first end and a second end in the length direction, and the first support includes: The second limiting part is used to limit the first end of the bracket body in the first direction; At least one first latch, wherein at least one first latch is used to limit the second end of the bracket body in the first direction.

6. The fuser according to claim 1, characterized in that, The second bracket has a first end, a connecting portion, and a second end sequentially along its length. The first bracket further includes: The third limiting part is used to limit the second end of the second bracket in the first direction; At least one second latch, the at least one second latch being used to limit the first end of the second bracket and / or the connecting portion of the second bracket in the first direction.

7. An image forming apparatus, characterized in that, Includes the fuser as described in claim 1.

Images