Labor-saving device for opening and closing cabinet door

Abstract

The application relates to the field of cabinet body assembling accessories, in particular to a cabinet door opening and closing labor-saving device. In the application, a thrust wheel is tightly attached to one side of an eccentric rotating disc away from the center under the action of a thrust spring; the force point of the thrust wheel and the eccentric rotating disc is changed by controlling the eccentric rotating disc to rotate through a push rod, so that when a user lifts the cabinet plate by hand, the push rod is rotated clockwise, the push rod drives the eccentric rotating disc to rotate clockwise, and when the eccentric rotating disc rotates to a force balance point deviating from the force point of the thrust wheel and the eccentric rotating disc, the cabinet door can be automatically opened or closed under the action of the elastic push rod assembly and kept in the opened or closed state, that is, the cabinet door can be opened and closed more labor-savingly and more conveniently.

Description

Technical Field

[0001] This invention relates to the field of cabinet assembly accessories, and more particularly to a cabinet door opening and closing effort-saving device. Background Technology

[0002] As an essential device for categorizing and storing things, furniture plays a very important role in people's daily lives, and it also plays a significant role in interior decoration.

[0003] It needs further explanation that existing furniture, such as cabinet doors, is generally controlled by handles. Moreover, the handles need to be fully pulled open or closed to fully open or close the cabinet door. This process is relatively laborious and inconvenient. If users are not careful, they may end up closing the door only halfway. Summary of the Invention

[0004] To solve the above problems, the present invention provides a cabinet door opening and closing effort-saving device. The cabinet door can be automatically closed and kept in the closed state under the action of the elastic push rod assembly, that is, opening and closing the cabinet door is more effortless and more convenient.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a cabinet door opening and closing effort-saving device, comprising a booster housing, a spring push rod assembly, a spring push rod fixing bracket, a spring preload adjustment assembly, a movable turntable assembly, and a push wheel. The movable turntable assembly includes an eccentric turntable and a push rod connected to one side of the eccentric turntable. The eccentric turntable is movably mounted inside the booster housing via a rotating shaft, and the push rod extends outside the booster housing. The spring push rod fixing bracket is mounted inside the booster housing, and the spring push rod fixing bracket... An elastic push rod track is provided inside, in which an elastic push rod assembly is fitted. One end of the elastic push rod assembly is in close contact with the spring preload adjustment assembly, and the other end of the elastic push rod assembly pushes the push wheel to be in close contact with the side of the eccentric turntable away from the center under its own elastic force. The push rod controls the rotation of the eccentric turntable and changes the force point of the push wheel and the eccentric turntable. When the force point deviates from the force balance point of the push wheel and the eccentric turntable, the elastic push rod assembly pushes the eccentric turntable to continue to rotate clockwise or counterclockwise.

[0006] As a further optimization, the elastic push rod assembly includes an elastic front shell, an elastic rear shell, and a thrust spring. Both the elastic front shell and the elastic rear shell have built-in spring grooves for accommodating the thrust spring. The two ends of the thrust spring are respectively located in the spring grooves of the elastic front shell and the elastic rear shell, and the end of the elastic front shell is movably connected to the thrust wheel. The elastic rear shell is pressed tightly against the spring preload adjustment assembly under the action of the thrust spring, and the spring preload adjustment assembly pushes the elastic rear shell to adjust the compression degree of the thrust spring.

[0007] As a further optimization, the end of the elastic push rod fixing bracket is also provided with a mounting groove, in which the spring preload adjustment component is mounted; the spring preload adjustment component includes an adjustment bracket and a screw, the adjustment bracket is fixedly installed in the mounting groove, the screw is installed on the adjustment bracket, wherein the screw passes through the adjustment block and is threadedly fitted to the adjustment block; one side of the adjustment block is provided with a first inclined surface structure facing the elastic rear shell, and the end of the elastic rear shell is provided with a sliding inclined surface structure, wherein the sliding inclined surface structure and the first inclined surface structure are closely fitted to each other.

[0008] As a further optimization, one end of the screw is also provided with a screw hole groove, wherein the booster housing is provided with an adjustment opening at the position corresponding to the screw hole groove.

[0009] As a further optimization, the booster housing is also equipped with an upper damping assembly and a lower damping assembly. The elastic push rod assembly drives the eccentric turntable to rotate and causes the push rod to contact the upper damping assembly, or the elastic push rod assembly drives the eccentric turntable to rotate and causes the eccentric turntable to contact the lower damping assembly.

[0010] As a further optimization, the lower damping assembly includes a lower slider, a lower hydraulic damping rod, and a damping rod mounting bracket. The lower hydraulic damping rod is mounted inside the booster housing via the damping rod mounting bracket. The lower slider has a waist hole on its surface, and the lower slider is mounted to the booster housing by rivets passing through the booster housing and the waist hole. One end of the lower slider contacts the lower hydraulic damping rod, and the other end of the lower slider contacts the eccentric turntable.

[0011] As a further optimization, it also includes a shell support frame set inside the booster shell. The shell support frame has a cavity inside for accommodating the eccentric turntable, and the upper end of the shell support frame is also provided with a damping mounting groove. The upper damping assembly includes an upper damping bracket and an upper hydraulic damping rod. The upper hydraulic damping rod is mounted in the damping mounting groove through the upper damping bracket. One end of the upper hydraulic damping rod is tightly attached to the end of the elastic push rod fixing bracket, and the other end of the upper hydraulic damping rod is tightly attached to the push rod.

[0012] As a further optimization, a drive hole is provided on the eccentric turntable, and the booster housing is provided with an arc-shaped opening corresponding to the movement trajectory of the drive hole.

[0013] The beneficial effects of this invention are as follows:

[0014] 1. In this invention, the thrust wheel is pressed against the side of the eccentric turntable away from the center under the action of the thrust spring; the rotation of the eccentric turntable is controlled by the push rod, which changes the force points of the thrust wheel and the eccentric turntable. Therefore, when the user lifts the cabinet panel by hand, the push rod rotates clockwise, which in turn causes the push rod to rotate the eccentric turntable clockwise. When the eccentric turntable rotates to a point where it deviates from the force balance point between the thrust wheel and the eccentric turntable, that is, as long as the user opens the cabinet door to a certain extent, the cabinet door can be automatically opened under the action of the elastic push rod assembly 2 and remain in the open state. If you want to close the cabinet door, you only need to pull down the cabinet door, which causes the push rod to rotate the eccentric turntable counterclockwise. When the eccentric turntable rotates to a point where it deviates from the force balance point between the thrust wheel and the eccentric turntable, that is, as long as the user closes the cabinet door to a certain extent, the cabinet door can be automatically closed under the action of the elastic push rod assembly and remain in the closed state. Therefore, opening and closing the cabinet door is more effortless and more convenient.

[0015] 2. The elastic push rod fixing bracket is equipped with an elastic push rod track, in which the elastic push rod assembly is installed. When the eccentric turntable rotates, the thrust wheel provides a stable and directional thrust, making the entire mechanism run smoothly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the booster's structure.

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the booster.

[0018] Figure 3 This is a schematic diagram of the assembly principle of the spring preload adjustment component and the spring rear shell.

[0019] Figure 4 This is a schematic diagram of the spring's rear shell.

[0020] Figure 5 This is a schematic diagram of the spring preload adjustment assembly.

[0021] Figure 6 This is a schematic diagram of the elastic push rod fixing bracket.

[0022] Figure 7 This is a schematic diagram of the lower damping component.

[0023] The reference numerals in the attached figures are as follows: booster housing 1, arc-shaped opening 11, eccentric turntable 21, push rod 22, drive hole 210, elastic front shell 31, elastic rear shell 32, spring groove 321, sliding inclined surface structure 322, thrust spring 33, thrust wheel 34, elastic push rod fixing bracket 4, elastic push rod track 41, mounting groove 42, upper damping bracket 51, upper hydraulic damping rod 52, adjusting bracket 61, screw 62, screw hole groove 621, adjusting block 63, first inclined surface structure 631, lower slider 71, waist hole 711, lower hydraulic damping rod 72, damping rod mounting bracket 73. Detailed Implementation

[0024] Please see Figure 1-7 As shown, this invention relates to a cabinet door opening and closing effort-saving device, comprising a booster housing 1, a spring push rod assembly, a spring push rod fixing bracket 4, a spring preload adjustment assembly, and a movable turntable assembly. The movable turntable assembly includes an eccentric turntable 21 and a push rod 22 integrally connected to one side of the eccentric turntable 21. The eccentric turntable 21 is movably mounted inside the booster housing 1 via a rotating shaft, and the push rod 22 extends outside the booster housing 1. The spring push rod fixing bracket 4 is mounted inside the booster housing 1, and the spring push rod assembly is mounted inside the spring push rod fixing bracket 4. The spring push rod assembly includes a spring front shell 31 and a spring rear shell 32. The spring 33 has a spring groove 321 built into both the front elastic shell 31 and the rear elastic shell 32 to accommodate the spring 33. The two ends of the spring 33 are respectively located in the spring groove 321 of the front elastic shell 31 and the rear elastic shell 32. The end of the front elastic shell 31 is also movably fitted with a thrust wheel 34. The thrust wheel 34 is pressed against the side of the eccentric turntable 21 away from the center under the action of the spring 33. The rear elastic shell 32 is pressed against the spring preload adjustment component under the action of the spring 33. The spring preload adjustment component pushes the rear elastic shell 32 to adjust the compression degree of the spring 33. The push rod 22 controls the rotation of the eccentric turntable 21 and changes the force points of the push wheel 34 and the eccentric turntable 21. When the force points deviate from the force balance point of the push wheel 34 and the eccentric turntable 21, the elastic push rod assembly pushes the push rod 22 to continue to rotate clockwise or counterclockwise.

[0025] In this invention, the thrust wheel 34 is pressed against the side of the eccentric turntable 21 away from the center under the action of the thrust spring 33. The eccentric turntable 21 is rotated by the push rod 22, which changes the force points of the thrust wheel 34 and the eccentric turntable 21. Therefore, when the user lifts the cabinet panel by hand, the push rod 22 rotates clockwise, which in turn causes the push rod 22 to drive the eccentric turntable 21 to rotate clockwise. When the eccentric turntable 21 rotates to a point away from the force balance point of the thrust wheel 34 and the eccentric turntable 21, that is, as long as the user opens the cabinet door to a certain extent... Under certain conditions, the cabinet door can automatically open and remain open under the action of the elastic push rod assembly. If you want to close the cabinet door, simply pull down the cabinet door, which will cause the push rod 22 to drive the eccentric turntable 21 to rotate counterclockwise. When the eccentric turntable 21 rotates to the point where it deviates from the force balance point between the push wheel 34 and the eccentric turntable 21, that is, as long as the user closes the cabinet door to a certain extent, the cabinet door can automatically close and remain closed under the action of the elastic push rod assembly. This makes opening and closing the cabinet door easier and more convenient.

[0026] See appendix Figure 6 Furthermore, in this specific embodiment, a spring push rod track 41 is provided inside the spring push rod fixing bracket 4, wherein the spring push rod assembly is fitted inside the spring push rod track 41. When the eccentric turntable 21 rotates, the thrust wheel 34 provides a stable and directional thrust, making the entire mechanism operate smoothly. Moreover, a mounting groove 42 is also provided at the end of the spring push rod fixing bracket 4, wherein the spring preload adjustment assembly is fitted inside the mounting groove 42.

[0027] Further, in this specific embodiment, the spring preload adjustment assembly includes an adjustment bracket 61 and a screw 62. The adjustment bracket 61 is fixedly installed in the mounting groove 42, and the screw 62 is installed on the adjustment bracket. The screw 62 passes through the adjustment block 63 and is threadedly fitted to the adjustment block 63. One end of the screw 62 is also provided with a screw hole groove 621. The booster housing 1 is provided with an adjustment opening at the position corresponding to the screw hole groove 621. By using a corresponding tool (a hexagonal key can be used in this specific embodiment), the screw 62 can be rotated through the adjustment opening and fitted to the screw hole groove 621, thereby causing the adjustment block 63 to move in the length direction of the screw 62. In this specific embodiment, the adjusting block 63 is a right-angled trapezoid, wherein the first inclined surface 631 of the right-angled trapezoidal structure faces the elastic rear shell 32, and a sliding inclined surface 322 is provided at the end of the elastic rear shell 32. The sliding inclined surface 322 is in close contact with the first inclined surface 631. By rotating the screw 62, the adjusting block 63 moves along the length of the screw 62, thereby causing the inclined surface of the adjusting block 63 to press against the sliding inclined surface 322 of the elastic rear shell 32, thus pushing the elastic rear shell 32 towards the elastic front shell 31, thereby compressing the thrust spring 33 between the elastic front shell 31 and the elastic rear shell 32. In this specific embodiment, when the adjusting block 63 moves upward, the compression degree of the thrust spring 33 decreases; when the adjusting block 63 moves downward, the compression degree of the thrust spring 33 increases. (See Appendix) Figure 4-5 )

[0028] See appendix Figure 4-5 Since this application involves cabinet doors of different sizes and weights, it is necessary to adjust the original thrust for different cabinet doors. Therefore, by rotating the screw 62, the adjusting block 63 can be moved along the length of the screw 62, thereby adjusting the compression of the spring and thus adjusting its original thrust.

[0029] See appendix Figure 2 Furthermore, in this specific embodiment, the booster housing 1 is also equipped with an upper damping assembly and a lower damping assembly. The elastic push rod assembly drives the eccentric turntable 21 to rotate, causing the push rod 22 to contact the upper damping assembly, or the elastic push rod assembly drives the eccentric turntable 21 to rotate, causing the eccentric turntable 21 to contact the lower damping assembly. When the cabinet door is opened to a certain angle, the push rod 22 contacts the upper damping assembly, thus the upper damping assembly acts as a buffer to prevent impact on the door panel when the door is opened. When the cabinet door is closed and rotated to a certain angle, the lower damping assembly contacts the turntable, acting as a buffer to prevent impact on the door panel when the door is closed.

[0030] See appendix Figure 7Furthermore, in this specific embodiment, the lower damping assembly includes a lower slider 71, a lower hydraulic damping rod 72, and a damping rod mounting bracket 73. The lower hydraulic damping rod 72 is mounted inside the booster housing 1 via the damping rod mounting bracket 73. The lower slider 71 has a waist hole 711 on its surface, and the lower slider 71 is mounted to the booster housing 1 by rivets passing through the booster housing 1 and the waist hole 711. One end of the lower slider 71 contacts the lower hydraulic damping rod 72, and the other end of the lower slider 71 contacts the eccentric turntable 21.

[0031] Further, in this specific embodiment, a shell support frame is also provided inside the booster shell 1. The shell support frame has a cavity for accommodating the eccentric turntable 21. The upper end of the shell support frame is also provided with a damping mounting groove 42. The upper damping assembly includes an upper damping bracket 51 and an upper hydraulic damping rod 52. The upper hydraulic damping rod 52 is mounted in the damping mounting groove 42 through the upper damping bracket 51. One end of the upper hydraulic damping rod 52 is close to the end of the elastic push rod fixing bracket 4, and the other end of the upper hydraulic damping rod 52 is close to the push rod 22.

[0032] See appendix Figure 1-2 Furthermore, in this specific embodiment, the eccentric turntable 21 is provided with a drive hole 210, and the booster housing 1 is provided with an arc-shaped opening 11 corresponding to the movement trajectory of the drive hole 210. Moreover, the booster of this application can also be modified to be electric. It can be connected to an external drive block that passes through the arc-shaped opening 11 and is fitted with the drive hole 210. Then, the external drive device drives the eccentric turntable 21, thereby driving the push rod 22 on the eccentric turntable 21 to rotate.

[0033] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A cabinet door opening and closing effort-saving device, characterized in that, The device includes a booster housing, a spring-loaded push rod assembly, a spring-loaded push rod fixing bracket, a spring preload adjustment assembly, a movable turntable assembly, and a thrust wheel. The movable turntable assembly includes an eccentric turntable and a push rod connected to one side of the eccentric turntable. The eccentric turntable is movably mounted inside the booster housing via a rotating shaft, and the push rod extends outside the booster housing. The spring-loaded push rod fixing bracket is mounted inside the booster housing, and a spring-loaded push rod track is provided inside the spring-loaded push rod fixing bracket. The spring-loaded push rod assembly is mounted inside the spring-loaded push rod track. One end of the spring-loaded push rod assembly is pressed against the spring preload adjustment assembly, and the other end of the spring-loaded push rod assembly, under its own elastic force, pushes the thrust wheel to press against the side of the eccentric turntable away from the center. The push rod controls the rotation of the eccentric turntable and changes the force points of the thrust wheel and the eccentric turntable. When the force points deviate from the force balance point of the thrust wheel and the eccentric turntable, the spring-loaded push rod assembly pushes the eccentric turntable to continue rotating clockwise or counterclockwise. The booster housing is also equipped with an upper damping assembly and a lower damping assembly. The elastic push rod assembly drives the eccentric turntable to rotate and causes the push rod to contact the upper damping assembly, or the elastic push rod assembly drives the eccentric turntable to rotate and causes the eccentric turntable to contact the lower damping assembly. The elastic push rod assembly includes an elastic front shell, an elastic rear shell, and two thrust springs. Both the elastic front shell and the elastic rear shell have two spring slots for accommodating the thrust springs. The two ends of the thrust springs are respectively located in the spring slots of the elastic front shell and the elastic rear shell, and the end of the elastic front shell is movably connected to the thrust wheel. The elastic rear shell is pressed against the spring preload adjustment assembly under the action of the thrust springs, and the compression degree of the thrust springs is adjusted by the spring preload adjustment assembly.

2. The cabinet door opening and closing effort-saving device according to claim 1, characterized in that: The end of the elastic push rod fixing bracket is also provided with a mounting groove, in which the spring preload adjustment component is mounted; the spring preload adjustment component includes an adjustment bracket, a screw, and an adjustment block. The adjustment bracket is fixedly mounted in the mounting groove, and the screw is mounted on the adjustment bracket. The screw passes through the adjustment block and is threadedly mounted to the adjustment block. One side of the adjustment block is provided with a first inclined surface structure facing the elastic rear shell, and the end of the elastic rear shell is provided with a sliding inclined surface structure, wherein the sliding inclined surface structure and the first inclined surface structure are closely attached to each other.

3. The cabinet door opening and closing effort-saving device according to claim 2, characterized in that: One end of the screw is also provided with a screw hole groove, and the booster housing is provided with an adjustment opening at the position corresponding to the screw hole groove.

4. The cabinet door opening and closing effort-saving device according to claim 1, characterized in that: The lower damping assembly includes a lower slider, a lower hydraulic damping rod, and a damping rod mounting bracket. The lower hydraulic damping rod is mounted inside the booster housing via the damping rod mounting bracket. The lower slider has a slotted hole on its surface, and the lower slider is mounted to the booster housing by rivets passing through the booster housing and the slotted hole. One end of the lower slider contacts the lower hydraulic damping rod, and the other end of the lower slider contacts the eccentric turntable.

5. The cabinet door opening and closing effort-saving device according to claim 1, characterized in that: It also includes a shell support frame disposed inside the booster shell, the shell support frame having a cavity inside for accommodating the eccentric turntable, and a damping mounting groove being provided at the upper end of the shell support frame, wherein the upper damping assembly includes an upper damping bracket and an upper hydraulic damping rod, wherein the upper hydraulic damping rod is mounted in the damping mounting groove through the upper damping bracket, and one end of the upper hydraulic damping rod is tightly attached to the end of the elastic push rod fixing bracket, and the other end of the upper hydraulic damping rod is tightly attached to the push rod.

6. The cabinet door opening and closing effort-saving device according to claim 1, characterized in that: Furthermore, the eccentric turntable has a drive hole, and the booster housing has an arc-shaped opening corresponding to the movement trajectory of the drive hole.

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