Hidden hinge capable of being opened by two-section force

Abstract

The utility model provides a hidden hinge capable of being opened by two-section force, which comprises a door plate hinge cup and a side plate hinge seat, a centrifugal transmission part adopting centrifugal rotation is arranged between the door plate hinge cup and the side plate hinge seat, and the centrifugal transmission part comprises a connecting arm, a transmission arm and a spring, the spring is installed in the door plate hinge cup, the two elastic ends of the spring are connected with the door plate hinge cup and the connecting arm respectively, the connecting arm is provided with an arc section, the transmission arm is provided with a front transmission section, the front transmission section is provided with a connecting shaft connected with the arc section and the door plate hinge cup respectively, the door plate hinge cup is provided with a semicircular shaft concentric with the arc section, and the front transmission section rotates around the semicircular shaft. Meanwhile, the connecting shaft is always connected to the arc section, so that the spring force acting on the connecting shaft and the rotating force borne by the connecting shaft are mutually balanced. And the structure is simple, small in occupied size, attractive, stable, high in adaptability and capable of achieving two-section force opening, and the use quality of products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hinges, in particular to a concealed hinge for two-stage force opening. Background Art

[0002] Existing hinges are widely used in furniture and electrical appliances. In particular, the concealed hinges on the market include a hinge cup installed on a door panel, a hinge seat installed on a cabinet body, a hinge arm hinged between the hinge cup and the hinge seat, and a transmission component for the hinge cup to open and close on the hinge seat. Among them, a torsion spring for providing a closing power source for the hinge cup is installed at the hinge joint between the hinge seat and the hinge arm.

[0003] However, the concealed hinges on the market have the following deficiencies in actual applications.

[0004] 1) The traditional concealed hinge has a complex structure and occupies a large volume, and is not suitable for being assembled in furniture, electrical appliances, etc. made of thin plates, with great limitations in use.

[0005] 2) After the traditional concealed hinge is fully opened, a rebounding phenomenon occurs due to the elastic action of the torsion spring, resulting in a small opening amplitude and affecting normal use.

[0006] 3) Due to avoiding mutual interference between the hinge cup and the hinge seat, there is a large gap in the traditional concealed hinge, resulting in a large overall structure of the hinge, not being suitable for assembly on thinner mounting plates, and being prone to dust and dirt accumulation, which is not conducive to the normal use of the product. Summary of the Utility Model

[0007] The invention object of the utility model is to overcome the deficiencies of the prior art, and provide a concealed hinge for two-stage force opening, which has a simple structure, small occupied volume, beautiful appearance, and stable structure, has two-stage force opening, high applicability, and improves the use quality of the product.

[0008] The invention object of the utility model is realized as follows: A concealed hinge for two-stage force opening includes a door panel hinge cup and a side plate hinge seat. An centrifugal transmission component using centrifugal rotation is arranged between the door panel hinge cup and the side plate hinge seat. The centrifugal transmission component includes a connecting arm, a transmission arm, and a spring. The spring is installed in the door panel hinge cup, and its two elastic ends are respectively connected to the door panel hinge cup and the connecting arm. The connecting arm is provided with an arc section. The transmission arm is provided with a front transmission section. The front transmission section is provided with a connecting shaft respectively connected to the arc section and the door panel hinge cup. The door panel hinge cup is provided with a semi-circular shaft concentric with the arc section. The front transmission section rotates around the semi-circular shaft, and at the same time, the connecting shaft is always connected to the arc section, so that the spring force acting on the connecting shaft is balanced with the rotational force received by the connecting shaft.

[0009] Optimized according to the above, the connecting arm includes a front connecting section and an arc section formed integrally. The front connecting section is installed in the door hinge cup through a fixing pin. The connecting shaft is slidably connected to the front connecting section or the arc section as the door hinge cup opens and closes. The spring is sleeved on the fixing pin, and the two elastic ends of the spring are respectively connected to the door hinge cup and the front connecting section.

[0010] Optimized according to the above, the door hinge cup and the side plate hinge seat form an opening and closing angle such that the connecting shaft is always slidably connected to the arc section. The opening and closing angle is set to be greater than or equal to 35 degrees.

[0011] Optimized according to the above, the door hinge cup includes an outer fixing frame and an inner connecting frame. The inner connecting frame is movably connected inside the outer fixing frame. The inner connecting frame is provided with a fixing pin for fixedly connecting the connecting arm, a positioning pin connected to one elastic end of the spring, a waist-shaped guide groove for slidably connecting the connecting shaft, and a semi-circular shaft for slidably connecting the front transmission section of the transmission arm.

[0012] Optimized according to the above, the outer fixing frame is provided with a limiting groove for slidably connecting the positioning pin, an outer convex edge and an outer groove for slidably fitting with the inner connecting frame. The inner connecting frame is provided with an inner groove and an inner convex edge for slidably fitting with the outer convex edge and the outer groove.

[0013] Optimized according to the above, the outer fixing frame is provided with mounting holes for fixing to the door panel and screws for fixedly connecting to the inner connecting frame.

[0014] Optimized according to the above, the transmission arm includes a front transmission section and a rear transmission section formed integrally. The rear transmission section is provided with a transmission shaft for linearly moving relative to the side plate hinge seat. The side plate hinge seat is provided with a transmission limiting groove for the linear movement of the transmission shaft.

[0015] Optimized according to the above, the side plate hinge seat includes a fixed outer seat and a connecting inner seat. The connecting inner seat is movably connected inside the fixed outer seat. The rear transmission section of the transmission arm is embedded on the connecting inner seat. The connecting inner seat is provided with a transmission limiting groove for limiting the moving position of the transmission arm.

[0016] Optimized according to the above, the connecting inner seat is provided with left and right adjusting parts for adjusting the relative front and rear mounting positions with respect to the fixed outer seat and up and down adjusting parts for adjusting the relative up and down mounting positions with respect to the fixed outer seat;

[0017] One end of the up and down adjusting part is installed on the connecting inner seat, and the other end of the up and down adjusting part is threadedly connected to the fixed outer seat. One end of the left and right adjusting part is eccentrically connected to the connecting inner seat, and the other end of the left and right adjusting part is fixed to the fixed outer seat.

[0018] The advantages of the present utility model are as follows:

[0019] 1) The hidden hinge of this structure adopts centrifugal rotation. When opening from a specified angle to the fully open state, the connecting shaft is always in the arc section of the connecting arm, so that the elastic force and rotational force of the spring acting on the connecting arm are in a balanced state and evenly distributed, enabling the door panel hinge cup to move freely, thereby realizing the function of two-stage force, achieving the purpose of unloading force and free hovering after the door panel is opened; effectively preventing the door panel from rebounding, ensuring a sufficient opening range for convenient placing and taking, and ensuring the use quality of the product.

[0020] 2) The centrifugal transmission component of the hidden hinge of this structure adopts centrifugal rotation, with a simple structure and stable transmission. It effectively reduces the height of the door panel hinge cup, occupies a small volume, and can be applied to products with thinner plates, having strong applicability.

[0021] 3) When the thickness of the plate is the same as that of the door panel hinge cup, due to the adoption of a semi-circular shaft, the axis position can be outside the door panel hinge cup, which can greatly reduce the gap between the door panel and the side panel, effectively improving the aesthetics of the overall product, preventing mosquitoes and dust, etc. Description of the Drawings

[0022] Figure 1 It is a top view of the fully open state of the preferred embodiment of the present utility model.

[0023] Figure 2 It is a cross-sectional view of the fully open state of the preferred embodiment of the present utility model.

[0024] Figure 3 It is a cross-sectional view of the fully open state of the centrifugal transmission component of the preferred embodiment of the present utility model.

[0025] Figure 4 It is a partial view of another angle of the fully open state of the centrifugal transmission component of the preferred embodiment of the present utility model.

[0026] Figure 5 It is a cross-sectional view of the centrifugal transmission component of the preferred embodiment of the present utility model when it is being opened or closed.

[0027] Figure 6 It is a cross-sectional view of the fully closed state of the centrifugal transmission component of the preferred embodiment of the present utility model.

[0028] Figure 7 It is an exploded view of the preferred embodiment of the present utility model.

[0029] Figure 8 It is a view of the preferred embodiment of the present utility model in use after assembly and opening.

[0030] Figure 9 It is a view of the preferred embodiment of the present utility model in use after assembly and closing. Detailed Description of the Preferred Embodiment

[0031] The present utility model will be further described below in conjunction with the accompanying drawings.

[0032] According to the attached Figures 1 to 9 As shown in the figure, the hidden hinge for two-stage force opening of the present utility model includes a door panel hinge cup 1 and a side plate hinge seat 2. An centrifugal transmission component using centrifugal rotation is provided between the door panel hinge cup 1 and the side plate hinge seat 2. The centrifugal transmission component includes a connecting arm 3, a transmission arm 4 and a spring 5. The spring 5 is installed in the door panel hinge cup 1 and its two elastic ends are respectively connected to the door panel hinge cup 1 and the connecting arm 3. The connecting arm 3 is provided with an arc section 31, the transmission arm 4 is provided with a front transmission section 41, and the front transmission section 41 is provided with a connecting shaft 6 respectively connected to the arc section 31 and the door panel hinge cup 1. The door panel hinge cup 1 is provided with a semi-circular shaft 7 concentric with the arc section 31. The front transmission section 41 rotates around the semi-circular shaft 7, and at the same time the connecting shaft 6 is always connected to the arc section 31, so that the spring 5 force acting on the connecting shaft 6 is balanced with the rotational force received by the connecting shaft 6.

[0033] Referring to Figures 1 to 9 As shown, further refined, the connecting arm 3 includes a front connecting section 32 and an arc section 31 integrally formed. The front connecting section 32 is installed in the door panel hinge cup 1 through a fixing pin 8. The connecting shaft 6 is slidably connected to the front connecting section 32 or the arc section 31 as the door panel hinge cup 1 opens and closes. The spring 5 is sleeved on the fixing pin 8 and the two elastic ends of the spring 5 are respectively connected to the door panel hinge cup 1 and the front connecting section 32.

[0034] Wherein, the door panel hinge cup 1 and the side plate hinge seat 2 form an opening and closing angle at which the connecting shaft 6 is always slidably connected to the arc section 31. The opening and closing angle is set to be greater than or equal to 35 degrees. The opening and closing angle of this structure can be selected as 35 degrees, 45 degrees or 50 degrees.

[0035] That is, the spring 5 of this structure acts on the connecting shaft 6 through the connecting arm 3, and the arc section 31 of the connecting arm 3 and the semi-circular shaft 7 are concentric structures. The structure is simple and the transmission is stable.

[0036] In this optimized scheme, the specified opening and closing angle is 45 degrees. When opening or closing to 45 degrees to the fully open state, the connecting shaft 6 is always located at the arc section 31 of the connecting arm 3, so that the elastic force and the rotational force are balanced with each other evenly. Therefore, the door panel hinge cup 1 can move freely within this opening and closing range, thereby realizing the two-stage force function, achieving the purpose of unloading force and free hovering after the door panel is opened, effectively preventing the door panel from rebounding, ensuring a sufficient opening amplitude for convenient placing and taking, and ensuring the use quality of the product.

[0037] Referring to Figures 1 to 9As shown in the figure, for further refinement, the door panel hinge cup 1 includes an outer fixing frame 11 and an inner connecting frame 12. The inner connecting frame 12 is movably connected within the outer fixing frame 11. The inner connecting frame 12 is provided with a fixing pin 8 for fixedly connecting the connecting arm 3, a positioning pin 13 connected to an elastic end of the spring 5, an arcuate guide groove 14 having a sliding connection with the connecting shaft 6, and a semi-circular shaft 7 having a sliding connection with the front transmission section 41 of the transmission arm 4.

[0038] Among them, the outer fixing frame 11 is provided with a limit groove 15 having a sliding connection with the positioning pin 13, an outer convex edge and an outer groove 17 adapted for slidingly mounting the inner connecting frame 12. The inner connecting frame 12 is provided with an inner groove 18 and an inner convex edge 19 adapted for slidingly mounting with the outer convex edge and the outer groove 17.

[0039] This hidden hinge, through the structural cooperation of the door panel hinge cup 1 with the connecting arm 3 and the transmission arm 4 of the centrifugal transmission component, has a simple structure, stable transmission, effectively reduces the height of the door panel hinge cup 1, occupies a small volume, can be applied to products with thinner plates, and has strong applicability.

[0040] At the same time, when the thickness of the plate is the same as that of the door panel hinge cup 1, by adopting the semi-circular shaft 7, the axis position can be outside the door panel hinge cup 1, which can greatly reduce the gap between the door panel and the side panel, effectively improving the aesthetics of the overall product, preventing mosquitoes, dust, etc.

[0041] In addition, the outer fixing frame 11 is provided with mounting holes for fixing on the door panel and screws 16 fixedly connecting with the inner connecting frame 12.

[0042] The structure is simple, the assembly is convenient, the occupied volume of the structure is increased, and at the same time, by using the structural cooperation of the connecting shaft 6 and the arcuate guide groove 14, the separation of the inner connecting frame 12 from the outer fixing frame 11 is avoided, the structural firmness is strengthened, and the operation stability is improved.

[0043] Refer to Figures 1 to 9 As shown in the figure, the transmission arm 4 includes a front transmission section 41 and a rear transmission section 42 formed integrally. The rear transmission section 42 is provided with a transmission shaft for linearly moving relative to the side plate hinge seat 2. The side plate hinge seat 2 is provided with a transmission limiting groove for the linear movement of the transmission shaft.

[0044] By adopting the transmission arm 4 with this structure, the transmission structure is simplified, the transmission stability is improved, and the use quality of the product is ensured.

[0045] Moreover, the connecting inner seat 22 is provided with a left-right adjusting member 9 for adjusting and fixing the relative front-back mounting position with respect to the fixed outer seat 21 and an up-down adjusting member 10 for adjusting and fixing the relative up-down mounting position with respect to the fixed outer seat 21. One end of the up-down adjusting member 10 is mounted on the connecting inner seat 22, and the other end of the up-down adjusting member 10 is threadedly connected to the fixed outer seat 21. One end of the left-right adjusting member 9 is eccentrically connected to the connecting inner seat 22, and the other end of the left-right adjusting member 9 is fixed to the fixed outer seat 21.

[0046] Through the structural cooperation of the fixed outer seat 21, the connecting inner seat 22, the up-down adjusting member 10, and the left-right adjusting member 9, there is multi-directional adjustment of the mounting position in the up-down and left-right directions, improving the assembly accuracy and having high applicability.

[0047] The above specific embodiments are only the specific embodiments with better effects of the present invention. Structures that are the same as or equivalent to the hidden hinge for two-stage force opening of the present invention are all within the protection scope of the present invention.

Claims

1. A concealed hinge capable of opening with two-stage force, comprising a door panel hinge cup (1) and a side panel hinge seat (2), characterized in that: A centrifugal transmission component that rotates centrifugally is provided between the door panel hinge cup (1) and the side panel hinge seat (2). The centrifugal transmission component comprises a connecting arm (3), a transmission arm (4) and a spring (5). The spring (5) is installed in the door panel hinge cup (1) and its two elastic ends are respectively connected to the door panel hinge cup (1) and the connecting arm (3). The connecting arm (3) is provided with an arc segment (31). The transmission arm (4) is provided with a front transmission segment (41). The front transmission segment (41) is provided with a connecting shaft (6) that is respectively connected to the arc segment (31) and the door panel hinge cup (1). The door panel hinge cup (1) is provided with a semicircular shaft (7) that is concentric with the arc segment (31). The front transmission segment (41) rotates around the semicircular shaft (7). At the same time, the connecting shaft (6) is always connected to the arc segment (31) so that the force of the spring (5) acting on the connecting shaft (6) and the rotational force exerted on the connecting shaft (6) are balanced with each other.

2. The concealed hinge capable of opening with two-stage force according to claim 1, characterized in that: The connecting arm (3) comprises an integrally formed front connecting section (32) and an arc section (31); the front connecting section (32) is installed in the door panel hinge cup (1) via a fixing pin (8); the connecting shaft (6) is slidably connected to the front connecting section (32) or the arc section (31) as the door panel hinge cup (1) opens and closes; the spring (5) is sleeved on the fixing pin (8) and the two elastic ends of the spring (5) are respectively connected to the door panel hinge cup (1) and the front connecting section (32).

3. The hidden hinge capable of opening with two-stage force according to claim 1, characterized in that: The door panel hinge cup (1) and the side panel hinge seat (2) form an opening and closing angle in which the connecting shaft (6) is always slidably connected to the arc segment (31), and the opening and closing angle is set to be greater than or equal to 35 degrees.

4. The concealed hinge capable of opening with two-stage force according to claim 1, characterized in that: The door panel hinge cup (1) comprises an outer fixing frame (11) and an inner connecting frame (12), wherein the inner connecting frame (12) is movably connected to the outer fixing frame (11), and the inner connecting frame (12) is provided with a fixing pin (8) for fixing the connecting arm (3), a positioning pin (13) connected to an elastic end of a spring (5), a waist-shaped guide groove (14) slidably connected to a connecting shaft (6), and a semicircular shaft (7) slidably connected to a front transmission section (41) of a transmission arm (4).

5. The hidden hinge capable of opening with two-stage force according to claim 4, characterized in that: The outer fixing frame (11) is provided with a limiting groove (15) slidably connected to the positioning pin (13), an outer convex edge and an outer groove (17) adapted to slide with the inner connecting frame (12), and the inner connecting frame (12) is provided with an inner groove (18) and an inner convex edge (19) adapted to slide with the outer convex edge and the outer groove (17).

6. The concealed hinge capable of opening with two-stage force according to claim 4, characterized in that: The outer fixing frame (11) is provided with a mounting hole for fixing to the door panel and a screw (16) for fixing to the inner connecting frame (12).

7. The concealed hinge capable of opening with two-stage force according to claim 1, characterized in that: The transmission arm (4) comprises an integrally formed front transmission section (41) and a rear transmission section (42); the rear transmission section (42) is provided with a transmission shaft for linear movement relative to the side plate hinge seat (2); and the side plate hinge seat (2) is provided with a transmission limiting groove for linear movement with the transmission shaft.

8. The concealed hinge capable of opening with two-stage force according to claim 1, characterized in that: The side plate hinge seat (2) comprises a fixed outer seat (21) and a connecting inner seat (22), wherein the connecting inner seat (22) is movably connected to the fixed outer seat (21), and the rear transmission section (42) of the transmission arm (4) is embedded in the connecting inner seat (22), and the connecting inner seat (22) is provided with a transmission limiting groove for limiting the moving position of the transmission arm (4).

9. The concealed hinge capable of opening with two-stage force according to claim 8, characterized in that: The connecting inner seat (22) is provided with a left-right adjusting member (9) for adjusting the front-rear installation position relative to the fixed outer seat (21) and an up-down adjusting member (10) for adjusting the up-down installation position relative to the fixed outer seat (21); One end of the upper and lower adjustment member (10) is mounted on the connecting inner seat (22), and the other end of the upper and lower adjustment member (10) is threadedly connected to the fixed outer seat (21); one end of the left and right adjustment member (9) is eccentrically connected to the connecting inner seat (22), and the other end of the left and right adjustment member (9) is fixed to the fixed outer seat (21).

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