Matching structure of developing box and drum stand

Abstract

The utility model provides a matching structure of a developing box and a drum frame, the matching structure is used for image forming equipment, the developing box is arranged in the drum frame, an elastic unit is arranged on the developing box, a movement allowance is arranged between the developing box and the drum frame, and the elastic unit and the developing box are detachably arranged. According to the utility model, the elastic unit is detachably fixed with the developing box, so that the elastic unit cannot move upwards relative to the developing box under the driving of elastic force, the elastic unit and the developing box are quickly connected, fixed and detached, the later maintenance and replacement are facilitated, and the same type of elastic unit can be adaptive to developing boxes of various structures or models.

Description

Technical Field

[0001] The utility model relates to a developing component, in particular to a matching structure of a developing box and a drum frame. Background Art

[0002] An image forming device (such as a laser printer) is usually provided with a developing box and a drum frame inside. The developing box and the drum frame form a processing box. The processing box is detachably installed in the image forming device. In order to realize the communication connection between the developing box and the laser printer, a chip electrically connected to the laser printer is provided on the existing developing box. Figure 1 As shown, considering that the developing box 10 and the drum frame 20 need to meet the detachable requirements of the printer, the electrical contact surface of the chip B on the existing developing box 10 is usually electrically connected to the electrical connector A of the printer in the form of a conflict. When the developing box 10 and the drum frame 20 are disassembled, the chip B moves with the developing box 10 and can be separated by relative sliding from the electrical connector A. There is a certain conflicting force between the chip and the electrical connector, which makes the electrical connector form a large friction with the electrical contact surface of the chip when the developing box is disassembled or installed. In the long run, it is easy to cause damage to the electrical contact surface of the chip, reducing the normal service life of the chip. At the same time, when installing the developing box, the chip is also easy to interfere with the electrical connector and affect the normal installation operation.

[0003] In order to solve the problem of friction damage or interference between the chip and the electrical connector, the applicant provides a solution for facilitating the separation of the chip and the electrical connector, including arranging an elastic unit on the developer box so that the developer box and the drum box can float relative to each other. The relevant patent application was submitted on the same day as the present application. How to achieve the connection and fixation between the elastic unit and the developer box to facilitate the maintenance and replacement of the elastic unit at a later stage is the technical solution provided by the utility model. Summary of the invention

[0004] The utility model provides a matching structure of a developing box and a drum frame, which can quickly disassemble and assemble an elastic unit and is convenient for later maintenance and replacement.

[0005] In order to achieve the above purpose, the technical solution adopted is:

[0006] A matching structure of a developing box and a drum frame is used in an image forming device, wherein the developing box is installed in the drum frame and an elastic unit is provided on the developing box. A movable margin is provided between the developing box and the drum frame, and the elastic unit and the developing box are detachably installed.

[0007] Preferably, a developing roller is provided on one side of the developing box, and the developing roller is parallel to the photosensitive drum on the drum frame and forms an abutting fit, and the elastic force provided by the elastic unit acts on the inner wall of the drum frame perpendicular to the axial direction of the developing roller.

[0008] Preferably, the developing box is built into a mounting groove of the drum frame with the notch facing upward, and the elastic unit is provided with a U-shaped clamping plate with the notch facing upward, and a frame plate is connected to the corresponding position of the developing box with the U-shaped clamping plate, and the U-shaped clamping plate is clamped on the inner and outer plate surfaces of the vertical side of the frame plate from bottom to top.

[0009] In one embodiment, the frame plate is arranged on a side of the developing box opposite to the developing roller (11), and a limiting plate arranged along the axial direction of the developing roller is provided on this side, and a supporting plate is connected to the elastic unit, and the upper plate surface of the supporting plate and the lower plate surface of the limiting plate form a contact fit.

[0010] In one embodiment, bolt connection holes are opened on the vertical side plate surface of the frame plate, and the U-shaped clamping plate is connected to the vertical side of the frame plate by bolts.

[0011] In one embodiment, a fixing hole is provided on the upper end surface of the frame plate, and a buckle integrally formed with the U-shaped clip is provided on the top of the side of the U-shaped clip located within the frame area of ​​the frame plate. The buckle passes through the fixing hole and is clamped on the upper end surface of the frame plate.

[0012] The above embodiments can be further optimized: a handle is provided on the developing box in the middle of the side where the elastic unit is located, and a limit groove with a notch facing upward is provided on the upper end surface of the handle. A connecting rod is connected to the elastic unit, and the cantilevered end of the connecting rod extends toward the handle and the end is connected to a limit rod, and the limit rod is inserted into the groove cavity of the limit groove from the notch of the limit groove.

[0013] Preferably, the elastic unit includes a connecting tube with its tube mouth facing the bottom surface of the mounting groove, a movable abutment is inserted in the tube cavity of the connecting tube and forms a guiding and limiting cooperation with the connecting tube in the direction of the tube core, a spring is connected between the inner tube bottom of the connecting tube and the movable abutment, the elastic force provided by the spring acts on the movable abutment along the direction of the tube core, and one end of the movable abutment arranged outside the connecting tube abuts against the bottom surface of the mounting groove.

[0014] Compared with the prior art, the technical effect of the utility model is as follows: through the connection and cooperation between the U-shaped card plate and the frame plate, the U-shaped card plate integrated with the elastic unit is clamped on the inner and outer plate surfaces of the vertical side of the frame plate from bottom to top, and the elastic unit will not move upward relative to the developing box under the driving of elastic force, thereby realizing a quick connection and fixation between the two. At a later time, the U-shaped card plate can be pulled off the vertical side of the frame plate to realize the disassembly operation of the elastic unit. The elastic unit is easy to disassemble and assemble, and is convenient for later maintenance and replacement, and also allows the same elastic unit to be adapted to developing boxes of various structures or models. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the prior art;

[0016] Figure 2 It is a schematic diagram of the assembly state of the developer cartridge and the drum cartridge of the utility model;

[0017] Figure 3 It is a schematic diagram of a drum box;

[0018] Figure 4 is a schematic diagram of a developing box;

[0019] Figure 5 is a schematic diagram of a developing roller;

[0020] Figure 6 It is a schematic diagram of a first connection implementation method of a U-shaped card plate and a frame plate;

[0021] Figure 7 for Figure 6 A magnified view of part A in FIG.

[0022] Figure 8 It is a partial schematic diagram of the elastic unit and the developing box being separated;

[0023] Fig. 9 It is a schematic diagram of a U-shaped pallet;

[0024] Fig.10 Schematic diagram of the limiting plate;

[0025] Fig.11 It is a schematic diagram of a second connection implementation method of a U-shaped card plate and a frame plate;

[0026] Fig.12 It is a schematic diagram of a third connection implementation method of a U-shaped card plate and a frame plate;

[0027] Fig.13 It is a schematic diagram of the fixing holes on the frame plate;

[0028] Fig.14 It is a schematic diagram of the buckle;

[0029] Fig.15 It is a schematic diagram of the assembly state of the connecting rod and the limit rod;

[0030] Fig.16 Schematic diagram of connecting rod and limiting rod;

[0031] Fig.17 It is a cross-sectional view of the elastic unit structure. DETAILED DESCRIPTION

[0032] The following will be combined with the attached Figure 1-17 The embodiments of the technical solution of this application are described in detail:

[0033] A matching structure of a developer box and a drum frame, wherein a developer box 10 is built into a receiving groove 21 on a drum frame 20 with a notch facing upward, a developing roller 11 is arranged on one side of the developer box 10, the developing roller 11 is parallel to a photosensitive drum 22 on the drum frame 20 and forms a contacting match, an elastic unit 12 arranged on the developer box 10 provides an elastic force that acts on the bottom surface of the receiving groove 21 in a direction perpendicular to the roller core of the developing roller 11, a U-shaped clamping plate 121 with a notch facing upward is arranged on the elastic unit 12, a frame plate 131 is connected to a corresponding position of the developer box 10 with the U-shaped clamping plate 121, and the U-shaped clamping plate 121 is clamped on the inner and outer plate surfaces of the vertical side of the frame plate 131 from bottom to top.

[0034] In the above scheme, through the connection and cooperation between the U-shaped card plate 121 and the frame plate 131, the U-shaped card plate 121 connected with the elastic unit 12 is clamped on the inner and outer plate surfaces of the vertical side of the frame plate 131 from bottom to top, and the elastic unit 12 will not move upward relative to the developing box 10 under the driving of elastic force, thereby realizing a quick connection and fixation between the two. At a later time, the U-shaped card plate 121 can be pulled off from the vertical side of the frame plate 131 to realize the disassembly operation of the elastic unit 12. The elastic unit 12 is easy to disassemble and assemble, and is convenient for later maintenance and replacement.

[0035] As a preferred solution, the frame plate 131 is arranged on the side of the developer box 10 opposite to the developer roller 11 and the side is provided with a limit plate 132 arranged along the roller core direction of the developer roller 11. The elastic unit 12 is connected with a support plate 122, and the upper plate surface of the support plate 122 and the lower plate surface of the limit plate 132 form a contacting match. By adding the cooperation between the support plate 122 and the limit plate 132, while the U-shaped clamping plate 121 is clamped on the vertical side of the frame plate 131, the upper plate surface of the support plate 122 and the lower plate surface of the limit plate 132 are in contact with each other, providing an additional support point for the elastic unit 12, so that it can be stably installed on the developer box 10.

[0036] In the present application, in order to improve the connection stability between the elastic unit 12 and the developer box 10, two other solutions for fixing the U-shaped clamping plate 121 and the frame plate 131 to each other are disclosed:

[0037] First, combine Fig.11 As shown, bolt connection holes are provided on the vertical side plate surface of the frame plate 131, and the U-shaped clamping plate 121 is connected to the vertical side of the frame plate 131 by bolts. The bolts can effectively fasten the U-shaped clamping plate 121 and the vertical side of the frame plate 131, thereby firmly fixing the elastic unit 12 on the developer box 10.

[0038] Second, combine Figure 12-14As shown, a fixing hole 1311 is provided on the upper end surface of the frame plate 131, and a buckle 1211 integrally formed with the U-shaped clamping plate 121 is provided on the top of the side of the U-shaped clamping plate 121 located in the frame area of ​​the frame plate 131, and the buckle 1211 passes through the fixing hole 1311 and is clamped on the upper end surface of the frame plate 131. The U-shaped clamping plate 121 is elastic, and the buckle 1211 is clamped on the upper end surface of the frame plate 131, so that the U-shaped clamping plate 121 and the frame plate 131 can be locked, and the U-shaped clamping plate 121 will not be loosened from the frame plate 131, thereby making the elastic unit 12 firmly fixed on the developer box 10.

[0039] In addition, combined Fig.15 , 16 As shown, on the basis of the above three fixing schemes of the U-shaped clamping plate 121 and the frame plate 131, in order to further stabilize the connection between the U-shaped clamping plate 121 and the frame plate 131, a handle 14 is provided on the developer box 10 at the middle part of the side where the elastic unit 12 is located, and a limiting groove 141 with a notch facing upward is provided on the upper end surface of the handle 14. A connecting rod 30 is connected to the elastic unit 12, and the cantilevered end of the connecting rod 30 extends toward the handle 14 and the end is connected to a limiting rod 31, and the limiting rod 31 is inserted into the groove cavity of the limiting groove 141 from the notch of the limiting groove 141. The limiting rod 31 at the end of the connecting rod 30 connected as a whole with the elastic unit 12 and the insertion and cooperation of the limiting groove 141 play the role of limiting the downward displacement of the elastic unit 12 relative to the developer box 10, which can prevent the U-shaped clamping plate 121 and the upper frame plate 131 of the developer box 10 from loosening, and ensure the stable connection between the elastic unit 12 and the developer box 10.

[0040] It should be noted that the handle 14 is a built-in component of the developer cartridge 10 in the prior art, and is used to facilitate taking the developer cartridge 10 out of the drum cartridge 20 .

[0041] Combination Fig.17 As shown, the elastic unit 12 includes a connecting tube 123 with its tube mouth facing the bottom surface of the receiving groove 21, a movable abutment 124 is inserted in the tube cavity of the connecting tube 123 and forms a guiding limit fit with the connecting tube 123 in the direction of the tube core, a spring 125 is connected between the inner tube bottom of the connecting tube 123 and the movable abutment 124, the elastic force provided by the spring 125 acts on the movable abutment 124 along the direction of the tube core, and one end of the movable abutment 124 which is externally arranged on the connecting tube 123 abuts against the bottom surface of the receiving groove 21.

Claims

1. A matching structure of a developing box and a drum frame, used in an image forming device, wherein the developing box (10) is installed in the drum frame (20), and an elastic unit (12) is provided on the developing box (10), and a movable margin is provided between the developing box (10) and the drum frame (20), characterized in that: The elastic unit (12) is detachably mounted on the developing box (10).

2. The matching structure of the developing box and the drum frame according to claim 1, characterized in that: A developing roller (11) is arranged on one side of the developing box (10); the developing roller (11) is parallel to the photosensitive drum (22) on the drum frame (20) and forms a resistive fit; the elastic force provided by the elastic unit (12) acts on the inner wall of the drum frame (20) in a direction perpendicular to the axial direction of the developing roller (11).

3. The matching structure of the developing box and the drum frame according to claim 2, characterized in that: The developing box (10) is built into a placement groove of the drum frame (20) with a notch facing upwards, the elastic unit (12) is provided with a U-shaped clamping plate (121) with a notch facing upwards, a frame plate (131) is connected to a position on the developing box (10) corresponding to the U-shaped clamping plate (121), and the U-shaped clamping plate (121) is clamped on the inner and outer plate surfaces of the vertical side of the frame plate (131).

4. The matching structure of the developing box and the drum frame according to claim 3, characterized in that: The frame plate (131) is arranged on a side of the developing box (10) opposite to the developing roller (11), and a limiting plate (132) arranged along the axial direction of the developing roller (11) is provided on the side; a supporting plate (122) is connected to the elastic unit (12); the supporting plate (122) and the limiting plate (132) are in abutting engagement with each other.

5. The matching structure of the developing box and the drum frame according to claim 3, characterized in that: Bolt connection holes are provided on the vertical side plate surface of the frame plate (131), and the U-shaped clamping plate (121) is connected to the vertical side of the frame plate (131) by bolts.

6. The matching structure of the developing box and the drum frame according to claim 3, characterized in that: The upper end surface of the frame plate (131) is provided with a fixing hole (1311); the top of the side edge of the U-shaped clamping plate (121) located within the frame area of ​​the frame plate (131) is provided with a buckle (1211) integrally formed with the U-shaped clamping plate (121); the buckle (1211) passes through the fixing hole (1311) and is clamped on the upper end surface of the frame plate (131).

7. The matching structure of the developing box and the drum frame according to any one of claims 3 to 6, characterized in that: A handle (14) is provided on the developing box (10) in the middle of the side where the elastic unit (12) is located, and a limit groove (141) with a notch facing upward is provided on the upper end surface of the handle (14). A connecting rod (30) is connected to the elastic unit (12), and the cantilevered end of the connecting rod (30) extends toward the handle (14) and the end is connected to a limit rod (31), and the limit rod (31) is inserted into the groove cavity of the limit groove (141) from the notch of the limit groove (141).

8. The matching structure of the developing box and the drum frame according to claim 3, characterized in that: The elastic unit (12) comprises a connecting tube (123) with a tube opening facing the bottom surface of the placement groove (21); a movable abutment (124) is inserted into the tube cavity of the connecting tube (123) and forms a guide limit fit with the connecting tube (123) in the direction of the tube core; a spring (125) is connected between the inner tube bottom of the connecting tube (123) and the movable abutment (124); the elastic force provided by the spring (125) acts on the movable abutment (124) along the direction of the tube core; and one end of the movable abutment (124) disposed outside the connecting tube (123) abuts against the bottom surface of the placement groove (21).

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