A bread maker with smooth chain movement

Abstract

This utility model discloses a bread maker with smooth chain conveyor movement, including a frame with two spaced-apart support plates; a chain conveyor assembly comprising a drive wheel, a chain, a drive device, and at least two rotating shafts; each rotating shaft is rotatably mounted between the two support plates, at least one rotating shaft is a movable outer rotating shaft, and at least one rotating shaft is a fixed-position rotating shaft; the drive wheel is fixedly mounted on each rotating shaft, and the chain and drive wheel form a friction transmission engagement; the drive device is drively connected to the fixed-position rotating shaft; and a thrust assembly is mounted on the support plates to apply an outward thrust to the movable outer rotating shaft. This utility model uses the friction transmission engagement between the drive wheel and the chain, combined with the thrust assembly applying an outward thrust to the movable outer rotating shaft, to keep the chain always taut, ensuring that the drive wheel can drive the chain to move smoothly and stably.

Description

Technical Field

[0001] This utility model relates to the technical field of bread machines, and in particular to a bread machine with smooth chain movement. Background Technology

[0002] Currently, the chain conveyors used in most bread makers consist of intersecting struts, with gear teeth directly contacting and pushing individual struts to drive the chain in a reciprocating motion. This structure causes the chain to jam once every time it advances one strut spacing (i.e., one gear tooth rotation) during reciprocating motion, and also results in a relatively short lifespan. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and provide a bread maker with smooth chain operation and long service life.

[0004] This utility model is implemented according to the following technical solution:

[0005] This utility model discloses a bread maker with smooth chain conveyor movement, comprising:

[0006] The frame is provided with two spaced-apart support plates;

[0007] A chain-belt motion assembly includes a drive wheel, a chain belt, a drive device, and at least two rotating shafts. Each rotating shaft is arranged sequentially along the length of a support plate and rotatably mounted between two support plates. At least one rotating shaft is a translationally movable outer rotating shaft, located on the outermost side and capable of translating outwards relative to the support plate. At least one rotating shaft is a fixed-position rotating shaft, its position fixed relative to the support plate. The drive wheel is fixedly mounted on each rotating shaft. The chain belt is a closed loop chain belt laid outside each drive wheel to form a friction drive engagement. The drive device is connected to the fixed-position rotating shaft and drives its rotation.

[0008] A thrust assembly, mounted on the support plate, acts on both sides of the translatable outer rotating shaft to apply an outward thrust to the translatable outer rotating shaft.

[0009] Compared with existing technologies, this invention uses friction transmission between the drive wheel and the chain belt, instead of using gear teeth to drive the chain belt, creating multiple contact friction points. This extends the force-bearing surface from the teeth of a single gear to the outer surface of the drive wheel, avoiding chain belt breakage and gear tooth wear caused by localized stress concentration. Furthermore, the thrust assembly applies an outer thrust to the movable outer shaft, keeping the chain belt constantly taut and ensuring sufficient contact and friction between the drive wheel and the chain belt, thus ensuring smooth and stable chain belt movement. Additionally, the position of the movable outer shaft can be finely adjusted according to the transmission state under the action of the thrust assembly. When the drive device starts or stops, causing fluctuations in the chain belt's force, the shaft can absorb impact energy through translation, thereby reducing impact damage to the shaft, drive wheel, and chain belt, effectively extending their service life.

[0010] In a preferred embodiment, the two thrust components acting on both sides of the translatable outer rotating shaft are of the same specification.

[0011] In a preferred embodiment, the support plate has a fixed end for receiving force, the thrust assembly includes a spring and a follower, the follower acts on the movable outer rotating shaft, and the spring is connected between the fixed end for receiving force and the follower.

[0012] In a preferred embodiment, when the spring is a tension spring, the follower has a radial portion and a protrusion. The radial portion and the protrusion intersect in a horizontal direction. One side of the radial portion is connected to the protrusion, and the other side is connected to the movable outer pivot. A third through hole is provided on the protrusion. A first through hole and a second through hole are provided on the support plate. The edge of the first through hole serves as the force-bearing fixed end. The first through hole is closer to the pivot relative to the protrusion. One of the hooks of the tension spring is connected to the first through hole. The tension section of the tension spring passes obliquely through the second through hole and the radial portion in sequence. The other hook is connected to the third through hole.

[0013] In a preferred embodiment, the support plate has a long through hole, the length direction of which is the same as the length direction of the support plate, and the two ends of the movable outer rotating shaft pass through the long through hole.

[0014] In a preferred embodiment, shaft sleeves are installed at both ends of the shaft.

[0015] In a preferred embodiment, at least two of the drive wheels are mounted on each of the shafts.

[0016] In a preferred embodiment, the driving device is a motor.

[0017] In a preferred embodiment, the bread maker with smooth chain movement also includes a speed control knob, which is electrically connected to the motor.

[0018] In a preferred embodiment, the bread maker with smooth chain movement also includes a switch button, which is electrically connected to the motor. Attached Figure Description

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0020] Figure 1 This is one of the perspective views of the bread maker with smooth chain movement according to this utility model;

[0021] Figure 2 This is the second perspective view of the bread maker with smooth chain movement according to this utility model;

[0022] Figure 3 This is a structural diagram of the thrust assembly of this utility model applying thrust to the outward direction of the translatable outer rotating shaft.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100 Frame, 110 First through hole, 120 Second through hole, 130 Long through hole, 140 Support plate, 200 Chain belt motion assembly, 210 Transmission wheel, 220 Chain belt, 240 Rotary shaft, 241 Translational outer rotating shaft, 242 Fixed position rotating shaft, 300 Thrust assembly, 310 Spring, 320 Follower, 321 Radial part, 322 Protrusion, 323 Third through hole, 400 Rotary shaft sleeve, 500 Speed ​​adjustment knob, 600 Switch button. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] To better illustrate this utility model, a further detailed description of this utility model is provided below with reference to the accompanying drawings.

[0027] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0028] See Figures 1 to 3This utility model discloses a bread maker with smooth chain belt movement, comprising:

[0029] The frame 100 is provided with two spaced-apart support plates 140;

[0030] A chain-belt motion assembly 200 includes a transmission wheel 210, a chain belt 220, a drive device, and at least two rotating shafts 240. Each of the rotating shafts 240 is arranged sequentially along the length of the support plate 140 and rotatably mounted between two support plates 140. At least one of the rotating shafts 240 is a translationally movable outer rotating shaft 241, which is located on the outermost side and can move outwards relative to the support plate 140. The rotating shafts 240 are translational, and at least one rotating shaft 240 is a fixed-position rotating shaft 242, which is a rotating shaft 240 whose position is fixed relative to the support plate 140; the transmission wheel 210 is fixedly installed on each of the rotating shafts 240, and the chain belt 220 is a closed loop chain belt 220, which is laid on the outside of each of the transmission wheels 210 to form a friction transmission engagement; the driving device is connected to the fixed-position rotating shaft 242 for driving the fixed-position rotating shaft 242 to rotate;

[0031] A thrust assembly 300 is mounted on the support plate 140 and acts on both sides of the movable outer rotating shaft 241 to apply an outward thrust to the movable outer rotating shaft 241.

[0032] Compared with the prior art, this utility model adopts a frictional transmission between the transmission wheel 210 and the chain 220, instead of using gear teeth to drive the chain 220, forming multiple contact friction positions. This extends the force-bearing surface from the teeth of a single gear to the surface of the transmission wheel 210, avoiding chain 220 support breakage and gear tooth wear caused by local stress concentration. Furthermore, the thrust assembly 300 applies an outer thrust to the movable outer shaft 241, keeping the chain 220 taut at all times. This ensures that the transmission wheel 210 can fully contact and rub against the chain 220, guaranteeing smooth and stable movement of the chain 220. Additionally, the position of the movable outer shaft 241 can be finely adjusted according to the transmission state under the action of the thrust assembly 300. When the drive device starts or stops, causing fluctuations in the force on the chain 220, the shaft can absorb impact energy through translation, thereby reducing impact damage to the shaft 240, transmission wheel 210, and chain 220, effectively extending their service life.

[0033] In this utility model, there are two rotating shafts 240 in total: one is an outer rotating shaft 241 that can be translated, and the other is a fixed-position rotating shaft 242.

[0034] It should be noted that, in another embodiment, if the number of the rotating shafts 240 is greater than two, the outermost rotating shaft 240 is not a fixed-position rotating shaft 242, and the outermost rotating shafts 240 can all be translational outermost rotating shafts 241, or one of the outermost rotating shafts 240 is a translational outermost rotating shaft 241, and the other outermost rotating shaft 240 is a fixed-position rotating shaft 242.

[0035] In one embodiment, the two thrust components 300 acting on both sides of the movable outer rotating shaft 241 are of the same specification, so as to achieve the same thrust on both sides of the movable outer rotating shaft 241, so that the rotating shaft 240 remains horizontally translated and will not tilt, thus eliminating the adverse effect of the chain belt 220 being stuck due to the tilting of the rotating shaft 240 caused by the inconsistent force.

[0036] In one embodiment, the support plate 140 has a fixed end, and the thrust assembly 300 includes a spring 310 and a follower 320. The follower 320 acts on the translatable outer rotating shaft 241, and the spring 310 is connected between the fixed end and the follower 320. The spring 310 has elastic deformation characteristics, which can both buffer transmission fluctuations and apply an outward thrust to the translatable outer rotating shaft 241 using the elastic force of the spring 310; the fixed end provides fixed support for the spring 310; and the follower 320 serves as a transition part, connecting the spring 310 and the translatable outer rotating shaft 241.

[0037] Furthermore, when the spring 310 is a tension spring, the follower 320 has a radial portion 321 and a protrusion 322. The radial portion 321 and the protrusion 322 intersect in the horizontal direction. One side of the radial portion 321 is connected to the protrusion 322, and the other side is connected to the movable outer rotating shaft 241. A third through hole 323 is provided on the protrusion 322. A first through hole 110 and a second through hole 120 are provided on the support plate 140. The edge of the first through hole 110 is used as the force-bearing fixed end. The first through hole 110 is closer to the rotating shaft 240 than the protrusion 322. One of the pull hooks of the tension spring is connected to the first through hole 100. The tension section of the tension spring passes obliquely through the second through hole 120 and the radial portion 321 in sequence. The other pull hook is connected to the third through hole 322.

[0038] The radial portion 321 and the protrusion 322 are connected to form an L-shaped structure. When the tension spring pulls the protrusion 322, the tension force acts on the protrusion 322 in the oblique direction of the tension spring. The radial portion 321, as the force transmission carrier, decomposes the oblique tension force into a thrust force pointing outward along the radial portion 321, thereby driving the movable outer rotating shaft 241 to translate outward.

[0039] The advantage of using a tension spring in the spring 310 is that it is easy to install and remove. Installing the tension spring requires only three steps: 1. Hook one end of the tension spring at the first through hole 110; 2. Pass the other end of the tension spring through the second through hole 120 and the radial portion 321; 3. Hook the other end of the tension spring at the third through hole 323 of the protrusion 322.

[0040] It should be noted that, in another embodiment, the spring 310 can be a compression spring 310. When the spring 310 is a compression spring 310, a reference plate protruding from the outer surface of the support plate can be provided, with the end face of the reference plate facing the movable outer rotating shaft 241 as the force-bearing fixed end. The follower 320 can be set as a push plate, with one end of the compression spring 310 connected to the reference plate and the other end connected to the push plate.

[0041] In one embodiment, the support plate 140 has an elongated through hole 130, the length direction of the elongated through hole 130 is the same as the length direction of the support plate 140, the two ends of the movable outer rotating shaft 241 pass through the elongated through hole 130, the inner wall of the elongated through hole 130 strictly restricts the translation trajectory of the rotating shaft 240, guides the movement of the rotating shaft 240, and only allows the rotating shaft 240 to move along the length direction of the support plate 140, blocking radial offset; if the rotating shaft 240 lacks radial constraint during rotation, it is easy to generate radial runout due to rotation, causing the contact gap between the chain belt 220 and the transmission wheel 210 to fluctuate and cause jamming.

[0042] In one embodiment, shaft sleeves 400 are installed at both ends of the shaft 240.

[0043] During operation, the shaft 240 needs to rotate or translate relative to the support plate 140. If the two are in direct contact, wear is easily caused by hard friction between metals, resulting in a reduction in the diameter of the shaft 240 and an increase in the assembly gap, which in turn causes the chain belt 220 to shake or jam.

[0044] The setting of the bushing 400 can form a buffer isolation layer, avoiding direct friction between the shaft 240 body and other components, concentrating wear on the lower-cost and easier-to-replace bushing 400, reducing the wear of the shaft 240, lowering the replacement cost and difficulty during subsequent maintenance, and indirectly extending the overall service life of the entire transmission structure.

[0045] In one embodiment, at least two of the drive wheels 210 are mounted on each of the shafts 240. The number of drive wheels can be adapted to vary depending on the length of the shaft.

[0046] Multiple drive wheels 210 can simultaneously contact and rub against different supports of the chain belt 220. When the drive device drives the rotating shaft 240 to rotate, the multiple drive wheels 210 will apply friction driving force to the chain belt 220 respectively, forming multiple power inputs at different positions, making the power transmission more continuous.

[0047] Multiple drive wheels 210 simultaneously support the chain belt 220, which increases the support range of the chain belt 220 and helps the chain belt 220 maintain tension.

[0048] In one embodiment, the drive device is an electric motor. Electric motors are readily available, have a low failure rate, and require little space.

[0049] Preferably, the motor is a DC speed-regulating motor.

[0050] Furthermore, the bread maker with smooth chain movement also includes a speed control knob 500, which is electrically connected to the motor. The user can control the speed of the chain 220 by rotating the speed control knob 500 to increase or decrease the motor speed.

[0051] Furthermore, the bread maker with smooth chain movement also includes a switch button 600, which is electrically connected to the motor. The user can control the motor's start and stop via the switch button 600.

[0052] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A bread maker with smooth chain conveyor movement, characterized in that, include: The frame is provided with two spaced-apart support plates; A chain-belt motion assembly includes a drive wheel, a chain belt, a drive device, and at least two rotating shafts. Each rotating shaft is arranged sequentially along the length of a support plate and rotatably mounted between two support plates. At least one rotating shaft is a translationally movable outer rotating shaft, located on the outermost side and capable of translating outwards relative to the support plate. At least one rotating shaft is a fixed-position rotating shaft, its position fixed relative to the support plate. The drive wheel is fixedly mounted on each rotating shaft. The chain belt is a closed loop chain belt laid on the outside of each drive wheel to form a friction drive engagement. The drive device is connected to the fixed-position rotating shaft and drives its rotation. A thrust assembly, mounted on the support plate, acts on both sides of the translatable outer rotating shaft to apply an outward thrust to the translatable outer rotating shaft.

2. The bread maker with smooth chain conveyor movement according to claim 1, characterized in that: The two thrust components acting on both sides of the movable outer rotating shaft are of the same specification.

3. The bread maker with smooth chain conveyor movement according to claim 1, characterized in that: The support plate has a force-bearing fixed end. The thrust assembly includes a spring and a follower, the follower being connected to the translatable outer rotating shaft, and the spring being connected between the force-bearing fixed end and the follower.

4. The bread maker with smooth chain conveyor movement according to claim 3, characterized in that: When the spring is a tension spring, the follower has a radial portion and a protruding portion. The radial portion and the protruding portion intersect in the horizontal direction. One side of the radial portion is connected to the protruding portion, and the other side is connected to the movable outer rotating shaft. A third through hole is provided on the protruding portion. The support plate has a first through hole and a second through hole, with the edge of the first through hole serving as the force-bearing fixing end. The first through hole is closer to the rotating shaft than the protrusion. One of the pull hooks of the tension spring is connected to the first through hole, the tension section of the tension spring passes obliquely through the second through hole and the radial portion in sequence, and the other pull hook is connected to the third through hole.

5. The bread maker with smooth chain conveyor movement according to claim 1, characterized in that: The support plate has a long through hole, the length direction of which is the same as the length direction of the support plate, and the two ends of the movable outer rotating shaft pass through the long through hole.

6. The bread maker with smooth chain conveyor movement according to claim 1, characterized in that: The shaft is fitted with shaft sleeves at both ends.

7. The bread maker with smooth chain conveyor movement according to claim 1, characterized in that: At least two of the drive wheels are installed on each of the aforementioned shafts.

8. The bread maker with smooth chain conveyor movement according to claim 1, characterized in that: The driving device is an electric motor.

9. The bread maker with smooth chain conveyor movement according to claim 8, characterized in that: The bread maker with smooth chain movement also includes a speed control knob, which is electrically connected to the motor.

10. The bread maker with smooth chain conveyor movement according to claim 8, characterized in that: The bread maker with smooth chain movement also includes a switch button, which is electrically connected to the motor.

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