Multi-gear opening adjusting mechanism

Abstract

The utility model relates to the technical field of refrigerators, and provides a multi-gear opening degree adjusting mechanism which comprises a cover plate assembly, and vent holes are formed in the cover plate assembly. An adjusting rod is arranged below the cover plate assembly and connected with a baffle located below the vent hole. The cover plate assembly is further provided with an adjusting button. The adjusting knob is fixedly connected with a rotating shaft which is fixedly sleeved with an adjusting wheel; the adjusting wheel is in transmission connection with the adjusting rod; a shaft sleeve seat is arranged below the adjusting knob; the rotating shaft coaxially penetrates through the shaft sleeve seat; a pressing plate is arranged between the adjusting knob and the shaft sleeve seat; an elastic body is clamped between the pressing plate and the shaft sleeve seat; a plurality of grooves are evenly and annularly formed in the end face, facing the adjusting button, of the pressing plate around the center axis of the rotating shaft. And raised heads are uniformly and annularly arranged on the adjusting knob. According to the utility model, the adjusting knob and the pressing plate are respectively provided with a plurality of groups of raised heads and grooves; and multi-gear adjustment of the adjusting rod is realized. By means of the elastic force, an operator can accurately sense whether gear shifting is adjusted in place or not, and accurate adjustment of the opening degree of the vent hole of the special storage space is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigerators, and in particular relates to a multi-position opening adjustment mechanism. Background Art

[0002] Existing refrigerators typically have multiple dedicated storage spaces for different ingredients, seasonings, fruits, and vegetables. Because these storage spaces have varying temperature and humidity requirements, adjusting the parameters of these dedicated storage spaces is crucial.

[0003] As disclosed in Chinese patent 201910546715.X, the dedicated storage space typically consists of a drawer and a sealed cover above the drawer. By adjusting the gap between the drawer and the sealed cover, or by adjusting the opening of the sealed cover's air inlet, the temperature, humidity, and other parameters of the dedicated storage space can be adjusted.

[0004] However, some opening adjustment structures have three gears: high, medium, and low. The adjustment range between the gears is large, and precise adjustment cannot be achieved. It is impossible to accurately control the air volume in and out according to the requirements of the storage space, and then accurately control parameters such as temperature and humidity.

[0005] In summary, the existing technology has obvious inconveniences and defects in actual use, so it is necessary to improve it. Utility Model Content

[0006] In view of the above-mentioned defects, the present invention mainly provides a multi-level opening adjustment mechanism to solve the technical problems of limited levels and low precision in opening adjustment of the air inlet holes in the fruit and vegetable storage area cover.

[0007] In order to solve the above problems, the utility model provides a multi-speed opening adjustment mechanism, comprising a cover plate assembly, wherein a vent hole is formed on the cover plate assembly; an adjustment rod is provided below the cover plate assembly, and the adjustment rod is connected to a baffle located below the vent hole; an adjustment button is further mounted on the cover plate assembly and is transmission-connected to the adjustment rod; the adjustment button is fixed to a rotating shaft, and an adjustment wheel is fixedly sleeved on the rotating shaft; the adjustment wheel is transmission-connected to the adjustment rod;

[0008] A shaft sleeve seat is provided below the adjusting button; the rotating shaft coaxially passes through the shaft sleeve seat; a pressure plate is provided between the adjusting button and the shaft sleeve seat; an elastic body is sandwiched between the pressure plate and the shaft sleeve seat;

[0009] The pressure plate is provided with a plurality of grooves evenly arranged around the central axis of the rotating shaft on the end surface facing the adjusting button; and the adjusting button is evenly provided with protrusions with the same number, corresponding positions and adapted cross-sectional shapes as the grooves.

[0010] According to the multi-gear opening adjustment mechanism of the utility model, a plurality of adjustment teeth are evenly arranged on the adjustment wheel; the adjustment rod is provided with a thread that cooperates with the adjustment teeth of the adjustment wheel; the tooth pitch of two adjacent adjustment teeth on the adjustment wheel is equal to the pitch of the thread.

[0011] According to the multi-gear opening adjustment mechanism of the present invention, the distance between the two grooves is equal to the pitch of the thread.

[0012] According to the multi-position opening adjustment mechanism of the utility model, the vent hole includes a plurality of strip-shaped gaps arranged at equal intervals.

[0013] According to the multi-speed opening adjustment mechanism of the present invention, the elastic body is a spring; the spring is sleeved on the outside of the rotating shaft, and its two ends respectively abut against the pressure plate and the shaft sleeve seat; the pressure plate and the shaft sleeve seat are both provided with an annular groove for accommodating the spring.

[0014] According to the multi-position opening adjustment mechanism of the utility model, the protruding head and the pressing plate are both made of metal.

[0015] According to the multi-position opening adjustment mechanism of the utility model, the shapes of the protrusion and the groove are both spherical.

[0016] According to the multi-speed opening adjustment mechanism of the present invention, the cover assembly includes a shelf, the front and rear ends of the shelf are respectively connected to the front decorative strip and the rear decorative strip; the adjustment button is installed on the front decorative strip, and the vent is opened on the rear decorative strip.

[0017] According to the multi-position opening adjustment mechanism of the present invention, the bottom of the rear decorative strip is further provided with two guide grooves which are respectively slidably matched with the two sides of the baffle.

[0018] According to the multi-speed opening adjustment mechanism of the present invention, the front decorative strip is provided with a plurality of speed bars evenly arranged around the adjustment button; the position of each speed bar corresponds to a groove; and the adjustment button is provided with an indicator bar.

[0019] In summary, the present invention achieves multi-level adjustment of the adjustment lever's movement by providing multiple sets of protrusions and grooves on the adjustment knob and pressure plate. Furthermore, the provision of an elastic body enables the operator to accurately sense whether the adjustment is in place, thereby achieving precise adjustment of the vent opening of the dedicated storage space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 yes Figure 1 Structural diagram of the middle A direction;

[0022] Figure 3 yes Figure 2 Schematic diagram of the partial cross-section structure in the B direction;

[0023] Figure 4 yes Figure 3 Schematic diagram of the partial cross-section structure in the middle C direction;

[0024] Figure 5 yes Figure 4 Schematic diagram of the explosion structure;

[0025] Figure 6 yes Figure 5 A schematic diagram of the structure of the adjustment button;

[0026] In the figure: 1-shelf, 11-front decorative strip, 12-rear decorative strip, 121-guide groove; 13-vent, 131-strip gap; 14-gear bar, 15-spring; 2-adjusting button, 21-indicator bar, 22-rotating shaft, 23-adjusting wheel, 24-sleeve seat, 25-protrusion; 3-adjusting rod, 31-baffle, 32-thread; 4-pressure plate, 41-groove. DETAILED DESCRIPTION

[0027] See also Figure 1 The present invention provides a multi-position opening adjustment mechanism, comprising a cover assembly, wherein a vent hole 13 is provided on the cover assembly; Figure 2 , an adjusting rod 3 is provided below the cover assembly, and the adjusting rod 3 is connected to a baffle 31 located below the vent 13;

[0028] The cover assembly is also provided with an adjusting button 2 which is transmission-connected to the adjusting rod 3;

[0029] Turning the adjusting knob 2 can drive the adjusting rod 3 to move axially, thereby changing the shielding area of the vent hole 13 by the baffle 31, thereby changing the opening of the vent hole 13 and adjusting the ventilation volume.

[0030] As an embodiment, the adjusting button 2 of the present invention is fixed to the rotating shaft 22, and the adjusting wheel 23 is fixedly sleeved on the rotating shaft 22; a plurality of adjusting teeth are evenly arranged on the adjusting wheel 23; the adjusting rod 3 is provided with a thread 32 that cooperates with the adjusting teeth of the adjusting wheel 23;

[0031] The tooth pitch of two adjacent adjusting teeth on the adjusting wheel 23 of the present invention is equal to the pitch of the thread 32; every time the adjusting knob 2 rotates one pitch angle, the adjusting rod 3 can be moved axially by one pitch distance, thereby reducing the amplitude of the minimum unit for adjusting the opening of the vent hole 13 and achieving fine adjustment of the opening of the vent hole 13.

[0032] As an embodiment, the transmission connection between the adjusting knob 2 and the adjusting rod 3 of the present invention can also be a gear-rack combination. For example, the adjusting wheel 23 is a gear, and a rack is fixed to the adjusting rod 3; the axial movement of the rack is adjusted by rotating the adjusting wheel 23.

[0033] See also Figure 3 The ventilation holes 13 of the present invention include a plurality of strip-shaped gaps 131 arranged at equal intervals; the air flow is dispersed into and out of each strip-shaped gap 131, reducing the degree of air flow turbulence and making the temperature and humidity in the storage space stable and controllable.

[0034] As an embodiment, the cover assembly of the present invention includes a shelf 1, wherein the front and rear ends of the shelf 1 are respectively connected to a front decorative strip 11 and a rear decorative strip 12; the adjustment button 2 is mounted on the front decorative strip 11, and the vent hole 13 is provided on the rear decorative strip 12;

[0035] Furthermore, the bottom of the rear trim strip 12 is provided with two guide grooves 121 that are respectively slidably matched with the two sides of the baffle 31; the guide grooves 121 offset the torsional force, allowing the baffle 31 to slide along the guide grooves 121 to accurately control the size of the opening.

[0036] See also Figure 4 , a shaft sleeve seat 24 is provided below the adjusting button 2 of the present invention; the rotating shaft 22 is coaxially connected to the shaft sleeve seat 24; a pressure plate 4 is provided between the adjusting button 2 and the shaft sleeve seat 24; an elastic body is sandwiched between the pressure plate 4 and the shaft sleeve seat 24;

[0037] More preferably, the elastic body is preferably a spring 15; the spring 15 is sleeved on the outside of the rotating shaft 22, and its two ends respectively abut against the pressure plate 4 and the shaft sleeve seat 24;

[0038] Furthermore, an annular groove for accommodating the spring 15 is formed on the pressing plate 4 and the sleeve seat 24 to prevent the spring 15 from moving.

[0039] See also Figure 5 The pressure plate 4 is provided with a plurality of grooves 41 on the end surface facing the adjusting button 2, evenly arranged around the central axis of the rotating shaft 22; Figure 6 , the adjusting button 2 is evenly provided with protrusions 25 with the same number, corresponding positions and cross-sectional shapes as the grooves 41;

[0040] When the operator turns the adjusting knob 2 to adjust the opening, all the protrusions 25 are squeezed out of the grooves 41 and abut against the pressure plate 4, thereby compressing the elastic body and generating friction on the protrusions 25. Under the action of the friction, the operator needs to increase the torque.

[0041] When each protrusion 25 rotates back into the groove 41, the elastic energy of the elastomer is released, and the operator can clearly feel the reduction in the torque force. At the same time, a knocking sound is produced when the protrusion 25 enters the groove 41, which also reminds the operator that a gear has been turned. Preferably, the protrusion 25 and the pressure plate 4 are made of metal, and the knocking sound is loud enough for the operator to hear.

[0042] Furthermore, the shapes of the protrusion 25 and the groove 41 are both spherical, which facilitates the protrusion 25 to enter and exit the groove 41.

[0043] As a preferred solution, the distance between the two grooves 41 of the present invention is equal to the pitch of the thread 32. Each time the adjusting knob 2 is adjusted to a gear position, the adjusting rod 3 moves axially by a distance of a pitch, thereby improving the accuracy of the opening adjustment.

[0044] As an embodiment, the front trim strip 11 is provided with a plurality of gear bars 14 evenly arranged around the adjusting knob 2; the position of each gear bar 14 corresponds to a groove 41; the adjusting knob 2 is provided with an indicator bar 21; when the indicator bar 21 is aligned with a gear bar 14, the corresponding protrusion 25 enters the groove 41, helping the operator to accurately determine whether the gear is adjusted properly.

[0045] In summary, the present invention provides a multi-position opening adjustment mechanism. By providing multiple sets of protrusions and grooves on the adjustment knob and pressure plate, the adjustment lever's travel can be adjusted in multiple positions. Furthermore, the provision of an elastic member allows the operator to accurately sense whether the adjustment is in place, thus enabling precise adjustment of the vent opening of the dedicated storage space.

[0046] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A multi-gear opening adjustment mechanism, characterized in that: The cover plate assembly comprises a cover plate assembly, wherein a vent hole is formed on the cover plate assembly; an adjustment rod is provided below the cover plate assembly, wherein the adjustment rod is connected to a baffle located below the vent hole; an adjustment button is also mounted on the cover plate assembly and is transmission-connected to the adjustment rod; the adjustment button is fixed to a rotating shaft, wherein an adjustment wheel is fixedly sleeved on the rotating shaft; and the adjustment wheel is transmission-connected to the adjustment rod; A shaft sleeve seat is provided below the adjusting button; the rotating shaft coaxially passes through the shaft sleeve seat; a pressure plate is provided between the adjusting button and the shaft sleeve seat; an elastic body is sandwiched between the pressure plate and the shaft sleeve seat; The pressure plate is provided with a plurality of grooves evenly arranged around the central axis of the rotating shaft on the end surface facing the adjusting button; and the adjusting button is evenly provided with protrusions with the same number, corresponding positions and adapted cross-sectional shapes as the grooves.

2. The multi-gear opening adjustment mechanism according to claim 1, characterized in that: The regulating wheel is evenly provided with a plurality of regulating teeth; the regulating rod is provided with a thread matched with the regulating teeth of the regulating wheel; the tooth pitch of two adjacent regulating teeth on the regulating wheel is equal to the pitch of the thread.

3. The multi-position opening adjustment mechanism according to claim 2, characterized in that: The distance between the two grooves is equal to the pitch of the thread.

4. The multi-gear opening adjustment mechanism according to claim 1, characterized in that: The vent hole comprises a plurality of strip-shaped gaps arranged at equal intervals.

5. The multi-gear opening adjustment mechanism according to claim 1, characterized in that: The elastic body is a spring; the spring is sleeved on the outside of the rotating shaft, and its two ends respectively abut against the pressure plate and the shaft sleeve seat; the pressure plate and the shaft sleeve seat are both provided with an annular groove for accommodating the spring.

6. The multi-position opening adjustment mechanism according to claim 1, characterized in that: The convex head and the pressing plate are both made of metal.

7. The multi-position opening adjustment mechanism according to claim 1, characterized in that: The shapes of the protrusion and the groove are both spherical.

8. The multi-position opening adjustment mechanism according to any one of claims 1 to 7, characterized in that: The cover assembly includes a shelf, the front and rear ends of the shelf are respectively connected to the front decorative strip and the rear decorative strip; the adjustment button is installed on the front decorative strip, and the vent hole is opened on the rear decorative strip.

9. The multi-position opening adjustment mechanism according to claim 8, characterized in that: The bottom of the rear decorative strip is further provided with two guide grooves which are respectively slidably matched with the two sides of the baffle.

10. The multi-position opening adjustment mechanism according to claim 8, characterized in that: The front decorative strip is provided with a plurality of gear strips evenly arranged around the periphery of the adjusting button; the position of each gear strip corresponds to a groove; and the adjusting button is provided with an indicator strip.

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