Adjustable hidden hinge

Abstract

An adjustable hidden hinge comprises a base, an adjusting seat, a hinge arm body, a rotating shaft structure and an adjusting structure. The bases and the adjusting bases are installed and matched in a stamping and bending mode. The structure is simple, and the number of used parts is small; the base, the adjusting seat and the hinge arm body are formed by punching, so that the bearing capacity is higher, large-scale production is facilitated, and the production cost is reduced; in addition, after the adjusting screw is screwed, the adjusting seat is driven to transversely move along the groove depth direction of the main accommodating groove under the action of the sliding guide structure so as to adjust the gap of the door slot, so that the gap of the door slot is convenient and simple to adjust; in a preferable scheme, after adjustment is completed, locking is conducted through a plurality of locking screws, and it is ensured that the hidden hinge is firm and not loosened in the using process, and the door leaf does not droop.

Description

Technical Field

[0001] This utility model relates to a concealed hinge (hereinafter referred to as a concealed hinge) used on a room door. Background Technology

[0002] Currently, concealed hinges used on doors, such as a three-dimensional adjustable concealed hinge assembly with authorization announcement number CN 207988763 U and a concealed hinge for doors with authorization announcement number CN 217735193 U, generally have complex structures and high production costs. Moreover, most components (especially the main components) are mainly produced by alloy or stainless steel casting or CNC machining, which also increases production costs to some extent. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a concealed hinge with a simpler structure, stronger load-bearing capacity, and lower production cost, which is convenient and simple to adjust the door gap.

[0004] To solve the aforementioned technical problems, this utility model adopts the following technical solution:

[0005] An adjustable concealed hinge includes a base, an adjustment seat, a hinge arm, a pivot structure, and an adjustment mechanism; the base and the adjustment seat are fitted together by stamping and bending; wherein:

[0006] After the base is stamped, a concave main receiving groove is formed in the middle, and a stepped adjustment seat positioning part and a base mounting part are formed on both sides respectively.

[0007] After the adjustment seat is stamped, the hinge swing arm receiving groove in the middle is provided in the main receiving groove, and the adjustment seat mounting part on the side is provided on the adjustment seat positioning part; the first straight arm on the base cooperates with the third straight arm on the adjustment seat, and the second straight arm on the base cooperates with the fourth straight arm on the adjustment seat; shaft holes are provided on the side walls on both sides of the adjustment seat.

[0008] The hinge arm body is stamped to form a hinge mounting body and a right-angled hinge arm; a rotating cylinder is provided at the outer end of the hinge arm that can fall into the hinge arm receiving groove;

[0009] The rotating shaft structure includes a rotating shaft fitted in the shaft hole and the rotating shaft cylinder, and a bushing fitted in both ends of the rotating shaft cylinder; after the hinge arm swings around the rotating shaft, the hinge arm enters and exits the hinge swing arm receiving groove.

[0010] The adjustment structure includes an adjustment screw and a sliding guide structure for limiting the adjustment seat to move left and right only along the depth direction of the main receiving groove; one end of the adjustment screw passes through the hole and washer of the positioning part of the adjustment seat and is riveted securely, and the other end is screwed in from the first screw hole of the mounting part of the adjustment seat; when the adjustment screw is turned, it drives the adjustment seat to move left and right along the groove depth direction of the main receiving groove under the action of the sliding guide structure.

[0011] In the improved version of the above-mentioned adjustable concealed hinge, the sliding guide structure adopts a snap-fit ​​on the mounting part of the adjustment seat; the snap-fit ​​is engaged with the side wall groove located between the positioning part of the adjustment seat and the mounting part of the base, and can move left and right along both sides of the side wall groove.

[0012] In the improved scheme of the above-mentioned adjustable concealed hinge, the sliding guide structure includes a boss provided on the mounting part of the adjustment seat and a guide groove provided on the side wall located between the positioning part of the adjustment seat and the mounting part of the base; the boss is provided in the guide groove and can move left and right in the guide groove.

[0013] In the improved version of the above-mentioned adjustable concealed hinge, the sliding guide structure further includes a notch groove on the bottom surface of the main receiving groove of the base and a waist strip on the bottom of the hinge arm receiving groove of the adjusting seat; the waist strip at the bottom of the hinge arm receiving groove of the adjusting seat extends into the notch groove and can move left and right along the notch groove.

[0014] In the improved version of the above-mentioned adjustable concealed hinge, the adjusting screw is an internal hexagon screw; a locking screw is provided on each of the adjusting seat mounting parts on both sides of the adjusting screw; it is screwed into the second screw hole of the adjusting seat positioning part.

[0015] In the improved version of the above-mentioned adjustable concealed hinge, at least one stamped concave reinforcing rib is provided at the root bend and the right-angle bend of the hinge arm, respectively.

[0016] In the improved version of the above-mentioned adjustable concealed hinge, the pivot cylinder is welded to the hinge plate or rolled into a circle during the stamping process of the hinge.

[0017] In the improved version of the above-mentioned adjustable concealed hinge, the hinge mounting body is provided with a waist-shaped hole and a fixing hole.

[0018] In the improved version of the above-mentioned adjustable concealed hinge, a limiting pin is provided in the hinge arm receiving groove of the adjustment seat to prevent the hinge arm from swinging too far open.

[0019] In the improved version of the above-mentioned adjustable concealed hinge, a base decorative cover is provided on the base, which is fastened to the base by hooks and wedge grooves provided on the base; a decorative baffle is provided on the base decorative cover; a hinge decorative cover is provided on the hinge mounting body, which is fastened to the hinge mounting body by hooks and wedge grooves provided on the hinge mounting body.

[0020] Compared with existing technologies, the advantages of this utility model are as follows: due to the simple structure of the concealed hinge, fewer parts are used; moreover, the base, adjusting seat, and hinge arm are stamped, which not only has a stronger load-bearing capacity but also facilitates mass production and reduces production costs; in addition, by turning the adjusting screw, the adjusting seat is moved laterally along the groove depth of the main receiving groove under the action of the sliding guide structure to adjust the door gap, making the adjustment of the door gap convenient and simple; in the preferred embodiment, after adjustment, it is also locked with several locking screws to ensure that the concealed hinge is reliable, does not loosen during use, and the door leaf does not sag.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the installation of this utility model behind the door according to Embodiment 1;

[0023] Figure 2 This is a three-dimensional schematic diagram of Embodiment 1 of this utility model. Figure 1 ;

[0024] Figure 3 This is a three-dimensional schematic diagram of Embodiment 1 of this utility model. Figure 2 ;

[0025] Figure 4 This is a three-dimensional schematic diagram of Embodiment 1 of this utility model. Figure 3 (Without decorative cover);

[0026] Figure 5 This is a three-dimensional schematic diagram of Embodiment 1 of this utility model. Figure 4 (Without decorative cover);

[0027] Figure 6 This is an assembly diagram of Embodiment 1 of this utility model;

[0028] Figure 7 This is a three-dimensional schematic diagram of Embodiment 2 of this utility model (without the decorative cover);

[0029] Figure 8 This is a three-dimensional schematic diagram of Embodiment 3 of this utility model (without the decorative cover). Detailed Implementation

[0030] An adjustable concealed hinge, such as Figures 1 to 6 As shown, it includes a base 1, an adjusting seat 2, a hinge arm 3, a rotating shaft structure 4, and an adjusting structure 5; the base 1 and the adjusting seat 2 are installed and fitted together by stamping and bending; wherein:

[0031] After the base 1 is stamped, a concave main receiving groove 11 is formed in the middle, and a stepped adjustment seat positioning part 12 and a base mounting part 13 are formed on both sides respectively.

[0032] After the adjustment seat 2 is stamped, the hinge swing arm receiving groove 21 in the middle is provided in the main receiving groove 11, and the adjustment seat mounting part 22 on the side is provided on the adjustment seat positioning part 12; the first straight arm 111 on the base 1 cooperates with the third straight arm 211 on the adjustment seat 2, and the second straight arm 123 on the base 1 cooperates with the fourth straight arm 222 on the adjustment seat 2, which plays the role of upper and lower limit and force transmission during adjustment; shaft holes 23 are provided on the side walls on both sides of the adjustment seat 2.

[0033] The hinge arm body 3 is stamped to form a hinge mounting body 31 and a right-angled hinge arm 32; a rotating cylinder 33 is provided at the outer end of the hinge arm 32, which can fall into the hinge arm receiving groove 21;

[0034] The rotating shaft structure 4 includes a rotating shaft 41 fitted in the shaft hole 23 and the rotating shaft cylinder 33, and a bushing 42 fitted in both ends of the rotating shaft cylinder 33; after the hinge arm 3 swings around the rotating shaft 41, the hinge arm 32 enters and exits the hinge swing arm receiving groove 21.

[0035] The adjustment structure 5 includes an adjustment screw 51 and a sliding guide structure 52 for limiting the adjustment seat 2 to move left and right along the depth direction of the main receiving groove 11. One end of the adjustment screw 51 passes through the hole 124 and the washer 53 of the positioning part 12 of the adjustment seat and is riveted securely. The other end is screwed in from the first screw hole 221 of the mounting part 22 of the adjustment seat. When the adjustment screw 51 is turned, it drives the adjustment seat 2 to move left and right (laterally) along the groove depth direction of the main receiving groove 11 under the action of the sliding guide structure 52. After the adjustment seat moves into or out of the groove, the size of the left and right gaps of the door after the door is closed can be adjusted.

[0036] As can be seen from the above, the hidden hinge has a simple structure and uses fewer parts; moreover, the base 1, the adjusting seat 2, and the hinge arm 3 are all stamped, which facilitates mass production and reduces production costs; in addition, by turning the adjusting screw 51, the adjusting seat 2 is driven to move laterally along the groove depth direction of the main receiving groove 11 under the action of the sliding guide structure 52 to adjust the left and right gaps of the door gap, making the adjustment of the door gap convenient and simple.

[0037] In Example 1, as Figures 3 to 6As shown, the sliding guide structure 52 employs a snap-fit ​​523 on the adjusting seat mounting portion 22; the snap-fit ​​523 engages with the side wall groove 525 located between the adjusting seat positioning portion 12 and the base mounting portion 13, and can move left and right (laterally) along both sides of the side wall groove 525. In embodiments two and three, as... Figures 7 to 8 As shown, the sliding guide structure 52 includes a boss 521 on the adjusting seat mounting portion 22 and a guide groove 522 on the side wall located between the adjusting seat positioning portion 12 and the base mounting portion 13; the boss 521 is disposed in the guide groove 522 and can move left and right in the guide groove 522. In embodiments two and three, as Figure 8 As shown, there are two sets of the boss 521 and the guide groove 522; in embodiments two and three, as Figure 7 As shown, there is a set of boss 521 and guide groove 522.

[0038] Preferably, the sliding guide structure 52 further includes a notch 524 on the bottom surface of the main receiving groove 11 of the base 1 and a waist strip 526 at the bottom of the hinge arm receiving groove 21 of the adjusting seat 2; the waist strip 526 at the bottom of the hinge arm receiving groove 21 of the adjusting seat 2 extends into the notch 524 and can move left and right (horizontally) along the notch 524, so that the left and right (horizontal) sliding adjustment of the adjusting seat 2 can be more stable, reliable and stable, thereby further improving the reliability and stability of the door gap adjustment.

[0039] In embodiments one to three, the adjusting screw 51 is an internal hexagon screw; preferably, a locking screw 6 is provided on each of the adjusting seat mounting portions 22 on both sides of the adjusting screw 51, which is screwed into the second screw hole 122 of the adjusting seat positioning portion 12. In this way, after the adjustment is completed, it is locked by several locking screws to ensure that the concealed hinge is reliable, does not loosen during use, and the door leaf does not sag.

[0040] At least one stamped concave reinforcing rib 321 is provided at the root bend and the right-angle bend of the hinge arm 32 to enhance the strength of the bend.

[0041] In embodiments one to three, the rotating shaft cylinder 33 is formed by welding it onto the hinge piece or rolling it into a circle during the stamping process of the hinge.

[0042] The hinge mounting body 31 is provided with a waist-shaped hole 311 and a fixing hole 312 to facilitate the up and down adjustment of the hinge and the fixing with screws to meet the installation requirements.

[0043] Preferably, such as Figures 5 to 8 As shown, a limiting pin 7 is provided in the hinge arm receiving groove 21 of the adjusting seat 2 to prevent the movable hinge 3 from swinging too far open. It is welded to the adjusting seat or riveted to the adjusting seat.

[0044] A base decorative cover 8 is provided on the base 1, which is fastened to the base 1 by hooks 10 and wedge-shaped grooves 20 provided on the base 1. A decorative baffle 81 is provided on the base decorative cover 8 to cover the side of the hinge mounting hole of the door leaf, making the door leaf more aesthetically pleasing. A hinge decorative cover 9 is provided on the hinge mounting body 31, which is fastened to the hinge mounting body 31 by hooks 10 and wedge-shaped grooves 20 provided on the hinge mounting body 31. In embodiments one to three, since the hinge can be adjusted up and down, in this case, the groove length of the wedge-shaped groove 20 on the hinge mounting body 31 is longer than the length of its corresponding hook 10. This way, after the up and down adjustment is completed, it will not affect the installation of the adjustment seat decorative cover. Figure 1 The diagram shown is a schematic of the use of this utility model after it is installed on the door frame 30 and the door leaf 40. It can be seen that, except for the exposed hinge arm, the rest is covered by the base decorative cover 8 and the hinge decorative cover 9.

[0045] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inner", and "outer" used to indicate the orientation or positional relationship are based on the positional relationship relative to the door leaf and door frame after the hinge is installed. These are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the content of the claims of the present utility model shall fall within the technical scope of the present utility model.

Claims

1. An adjustable concealed hinge, characterized in that, It includes a base, an adjusting seat, a hinge arm, a rotating shaft structure, and an adjusting structure; the base and the adjusting seat are installed and fitted together by stamping and bending; wherein: After the base is stamped, a concave main receiving groove is formed in the middle, and a stepped adjustment seat positioning part and a base mounting part are formed on both sides respectively. After the adjustment seat is stamped, the hinge swing arm receiving groove in the middle is provided in the main receiving groove, and the adjustment seat mounting part on the side is provided on the adjustment seat positioning part; the first straight arm on the base cooperates with the third straight arm on the adjustment seat, and the second straight arm on the base cooperates with the fourth straight arm on the adjustment seat; shaft holes are provided on the side walls on both sides of the adjustment seat. The hinge arm body is stamped to form a hinge mounting body and a right-angled hinge arm; a rotating cylinder is provided at the outer end of the hinge arm that can fall into the hinge arm receiving groove; The rotating shaft structure includes a rotating shaft fitted in the shaft hole and the rotating shaft cylinder, and a bushing fitted in both ends of the rotating shaft cylinder; after the hinge arm swings around the rotating shaft, the hinge arm enters and exits the hinge swing arm receiving groove. The adjustment structure includes an adjustment screw and a sliding guide structure for limiting the adjustment seat to move left and right only along the depth direction of the main receiving groove; one end of the adjustment screw passes through the hole and washer of the positioning part of the adjustment seat and is riveted securely, and the other end is screwed in from the first screw hole of the mounting part of the adjustment seat; when the adjustment screw is turned, it drives the adjustment seat to move left and right along the groove depth direction of the main receiving groove under the action of the sliding guide structure.

2. The adjustable concealed hinge according to claim 1, characterized in that, The sliding guide structure adopts a snap-fit ​​on the mounting part of the adjustment seat; the snap-fit ​​is engaged with the side wall groove located between the positioning part of the adjustment seat and the mounting part of the base, and can move left and right along both sides of the side wall groove.

3. The adjustable concealed hinge according to claim 1, characterized in that, The sliding guide structure includes a boss on the mounting part of the adjustment seat and a guide groove on the side wall between the positioning part of the adjustment seat and the mounting part of the base; the boss is located in the guide groove and can move left and right in the guide groove.

4. The adjustable concealed hinge according to claim 2 or 3, characterized in that, The sliding guide structure also includes a notch groove on the bottom surface of the main receiving groove of the base and a waist strip at the bottom of the hinge arm receiving groove of the adjusting seat; the waist strip at the bottom of the hinge arm receiving groove of the adjusting seat extends into the notch groove and can move left and right along the notch groove.

5. The adjustable concealed hinge according to claim 1, characterized in that, The adjusting screw is an internal hexagon screw; a locking screw is provided on each of the adjusting seat mounting parts on both sides of the adjusting screw; it is screwed into the second screw hole of the adjusting seat positioning part.

6. The adjustable concealed hinge according to claim 1, characterized in that, At least one stamped concave reinforcing rib is provided at the root bend and the right-angle bend of the hinge arm.

7. The adjustable concealed hinge according to claim 1, characterized in that, The rotating shaft cylinder is welded onto the hinge plate or rolled into a circle during the stamping and forming of the hinge.

8. The adjustable concealed hinge according to claim 1, characterized in that, The hinge mounting body is provided with a waist-shaped hole and a fixing hole.

9. The adjustable concealed hinge according to claim 1, characterized in that, The hinge arm receiving groove of the adjustment seat is provided with a limiting pin to prevent the hinge arm from swinging too far open.

10. The adjustable concealed hinge according to claim 1, characterized in that, A base decorative cover is provided on the base, which is fastened to the base by hooks and a wedge-shaped groove provided on the base; a decorative baffle is provided on the base decorative cover; a hinge decorative cover is provided on the hinge mounting body, which is fastened to the hinge mounting body by hooks and a wedge-shaped groove provided on the hinge mounting body.

Images