Connecting rod hinge

Abstract

The utility model discloses a connecting rod hinge which comprises a shell, a tension spring, a fixing block, a support, a connecting rod and a swing arm. One end of the tension spring is limited at the open end of the shell, the other end of the tension spring is connected with a fixing block, and the fixing block is connected with a fixing shaft which can move along a linear groove formed in the inner wall of the shell. The bracket is assembled at the tail end of the shell and is provided with a guide part extending out of the shell; the upper end of the connecting rod is connected to the fixing block; the swing arm is connected with the tail end of the connecting rod and is connected with the guide part of the bracket; the swing arm swings relative to the shell and can swing to a first position and a second position; when the swing arm swings from the first position to the second position, the connecting rod moves in the shell and swings to extend out of the side face of the shell. According to the utility model, the linear groove is arranged in the shell and can play a guiding role, and the swing arm can keep the constraint of linear operation when doing opening-closing motion; a hook groove is formed in the connecting rod, when the swing arm is opened to the maximum stroke, the hook groove interferes with the first rivet, and the stroke of the swing arm is effectively limited.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, and more specifically to linkage hinges. Background Technology

[0002] A hinge is a connecting component that connects two parts, allowing them to open and close relative to each other. Depending on the application, the specific structure of the hinge will vary.

[0003] Currently, there are various structures for hinges used in household appliances such as microwave ovens, ovens, dishwashers, and sterilizers.

[0004] A dishwasher is a kitchen appliance that cleans dishes automatically. The dishwasher door and body are connected by hinges, which open the door to let in the dishes.

[0005] This application relates to a linkage hinge suitable for use in dishwashers. Utility Model Content

[0006] In view of this, the present invention provides a connecting rod hinge.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a connecting rod hinge, comprising:

[0008] shell;

[0009] A tension spring and a fixing block are provided. One end of the tension spring is restricted at the opening of the outer shell, and the other end is connected to the fixing block. The fixing block is connected to a fixing shaft, which can move along a linear groove provided on the inner wall of the outer shell.

[0010] A bracket, fitted to the end of the housing, has a guide portion extending out of the housing;

[0011] A connecting rod, the upper end of which is connected to a fixed block;

[0012] The swing arm connects to the end of the connecting rod and to the guide part of the bracket;

[0013] The swing arm swings relative to the outer casing and can swing to a first position and a second position;

[0014] During the swinging motion of the swing arm from the first position to the second position, the connecting rod moves inside the housing and swings out of the side of the housing.

[0015] As a preferred embodiment of this utility model, the fixing block includes: a first fixing block and a second fixing block;

[0016] The second fixing block is embedded in the first fixing block, and the upper end of the connecting rod is connected to the first fixing block and the second fixing block.

[0017] As a preferred embodiment of this utility model, the bracket is mounted on the outer shell via a fixing plate;

[0018] The bracket has a mounting portion that fits against one side of the housing, and the fixing plate secures the mounting portion to the housing by a first rivet and a second rivet.

[0019] In a preferred embodiment of this utility model, the first rivet and the second rivet are distributed vertically.

[0020] As a preferred embodiment of this utility model, a hook groove is provided near the upper end of the connecting rod. When the swing arm is in the second position, the first rivet is engaged in the hook groove to limit the stroke of the swing arm.

[0021] As a preferred embodiment of this utility model, the outer shell has a set of symmetrical inner wall surfaces provided with linear grooves, which extend along the length direction of the outer shell.

[0022] As a preferred embodiment of this utility model, a through groove is provided on one side of the outer shell, and when the swing arm swings from the first position to the second position, the lower end of the connecting rod extends out from the through groove.

[0023] In a preferred embodiment of this utility model, the swing arm is provided with a first connecting part and a second connecting part, the first connecting part being connected to the end of the connecting rod, and the second connecting part being connected to the guide part of the bracket.

[0024] As can be seen from the above technical solution, compared with the prior art, the present invention has the following beneficial technical effects: The present invention has a linear groove in the outer shell, which can play a guiding role and maintain the constraint of linear operation when the swing arm moves open and close; while a hook groove is provided on the connecting rod, when the swing arm is opened to the maximum stroke, the hook groove interferes with the first rivet, effectively limiting the stroke of the swing arm; the present invention is a hinge suitable for dishwashers and can withstand high loads. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the connecting rod hinge of this utility model;

[0027] Figure 2 This is an exploded view of the connecting rod hinge of this utility model;

[0028] Figure 3This is a cross-sectional view of the swing arm in the first position;

[0029] Figure 4 This is a cross-sectional view of the swing arm in the second position.

[0030] Explanation of reference numerals in the attached figures

[0031] 100 housing; 101 linear groove; 102 through groove; 200 tension spring; 300 fixing block; 301 fixing shaft; 310 first fixing block; 320 second fixing block; 400 bracket; 410 guide part; 420 mounting part; 500 connecting rod; 501 hook groove; 600 swing arm; 610 first connecting part; 620 second connecting part; 700 fixing plate; 710 first rivet.

[0032] Second rivet 720. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0034] Linkage hinge, please refer to Figures 1-4 As shown, it includes: a housing 100, a tension spring 200, a fixing block 300, a bracket 400, a connecting rod 500, and a swing arm 600.

[0035] The outer shell 100 is elongated and can be made of high-hardness metal material;

[0036] The tension spring 200 is installed on the upper part of the housing 100, and the upper end of the tension spring 200 is restricted at the opening of the housing 100, that is... Figure 1 Specifically, the upper end of the tension spring 200 is attached to the opening of the outer casing 100 by rivets;

[0037] The fixed block 300 is connected to the fixed shaft 301, and the lower end of the tension spring 200 is connected to the fixed block 300. When the fixed block 300 moves up and down inside the housing 100, it pulls the tension spring 200 to extend and retract.

[0038] The fixing block 300 is installed inside the housing 100 via the fixing shaft 301, and a set of symmetrical inner wall surfaces of the housing 100 are provided with linear grooves 101, which extend along the length of the housing 100; for example Figure 1 As shown, a linear groove 101 is formed on the inner wall of the outer shell 100 by pressing on a set of symmetrical side surfaces, while a corresponding protrusion is formed on the outer wall. The fixed shaft 301 is engaged in the two symmetrical linear grooves 101, and the fixed shaft 301 can move along the linear grooves 101.

[0039] The bracket 400 is fitted to the end of the housing 100, and the bracket 400 has a guide portion 410 extending out of the housing 100;

[0040] The upper end of the connecting rod 500 is connected to the fixed block 300, and the lower end is connected to the swing arm 600. The swing arm 600 is connected to the guide part 410 of the bracket 400.

[0041] The swing arm 600 swings relative to the outer casing 100 and can swing to a first position and a second position;

[0042] During the swing of the swing arm 600 from the first position to the second position, the connecting rod 500 moves within the housing 100 and swings out of the side of the housing 100.

[0043] In one embodiment, the fixing block 300 includes: a first fixing block 310 and a second fixing block 320. The second fixing block 320 is embedded in the first fixing block 310. The upper ends of the first fixing block 310 and the second fixing block 320 are connected by a fixing shaft 310. The upper end of the connecting rod 500 is connected to the first fixing block 310 and the second fixing block 320. Specifically, the upper end of the connecting rod 500 is integrally connected to the lower end of the first fixing block 310 and the lower end of the second fixing block 320 through a fixing shaft for limiting.

[0044] In one embodiment, the bracket 400 is mounted to the housing 100 via a fixing plate 700;

[0045] The bracket 400 has a mounting portion 420 that fits against one side of the housing 100, and the fixing plate 700 fixes the mounting portion 420 to the housing 100 by a first rivet 710 and a second rivet 720.

[0046] In one embodiment, the first rivet 710 and the second rivet 720 are distributed vertically, and a hook groove 501 is provided near the upper end of the connecting rod 500. When the swing arm 600 is in the second position, the first rivet 710 is engaged in the hook groove 501 to limit the stroke of the swing arm 600. Specifically, the hook groove 501 is arranged near the upper end of the connecting rod 500.

[0047] In one embodiment, a through groove 102 is provided on one side of the housing 100. When the swing arm 600 swings from the first position to the second position, the lower end of the connecting rod 500 extends out from the through groove 102. The swing arm 600 is provided with a first connecting part 610 and a second connecting part 620. The first connecting part is connected to the end of the connecting rod 500, and the second connecting part 620 is connected to the guide part 410 of the bracket 400.

[0048] like Figures 3-4 As shown, Figure 3 The middle swing arm 600 is in the first position, that is, the closed state. At this time, the swing arm 600 is roughly set vertically.

[0049] Apply force to rotate the swing arm 600 counterclockwise, causing the swing arm 600 to rotate to... Figure 4 In the second position shown, during this process, the swing arm 600 rotates at the connection point with the bracket 400, that is, the connection point between the second connecting part 620 and the guide part 410 of the bracket 400. During the rotation, the swing arm 600 pulls the connecting rod 500 downward and swings to the left. The lower end of the connecting rod 500 swings to the left out of the outer shell 100. The downward movement of the connecting rod 500 pulls the fixing block 300 and the tension spring 200 downward. The fixing shaft 301 moves downward along the linear groove 101. The tension spring 200 is stretched. The swing arm 600 rotates from the vertical position to the horizontal position, but the swing arm 600 is not level with the horizontal plane when it rotates to the second position.

[0050] When the swing arm 600 swings to the second position, the first rivet 710 is just locked in the hook groove 501, which prevents the connecting rod 500 from moving further down and limits the stroke of the swing arm 600.

[0051] When the swing arm 600 is switched from the second position to the first position, the swing arm 600 is pushed to rotate counterclockwise around the connection point with the bracket 400. During the rotation, the connecting rod 500 is pushed to move upward, and the connecting rod 500 swings downward into the outer shell 100. The fixing block 300 and the tension spring 200 move upward to reset.

[0052] The linkage hinge of this invention is suitable for use in dishwashers.

[0053] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A linkage hinge, characterized in that: include: Outer shell (100); A tension spring (200) and a fixing block (300) are provided. One end of the tension spring (200) is restricted at the opening of the outer shell (100), and the other end is connected to the fixing block (300). The fixing block (300) is connected to a fixing shaft (301), which can move along the linear groove (101) provided on the inner wall of the outer shell (100). A bracket (400) is fitted to the end of the housing (100), and the bracket (400) has a guide (410) extending out of the housing (100); Linkage (500), the upper end of which is connected to the fixed block (300); The swing arm (600) is connected to the end of the connecting rod (500) and to the guide (410) of the bracket (400); The swing arm (600) swings relative to the outer casing (100) and can swing to a first position and a second position; During the swing of the swing arm (600) from the first position to the second position, the connecting rod (500) moves within the housing (100) and swings out of the side of the housing (100).

2. The linkage according to claim 1, characterized in that: The fixing block (300) includes: a first fixing block (310) and a second fixing block (320); The second fixing block (320) is embedded in the first fixing block (310), and the upper end of the connecting rod (500) is connected to the first fixing block (310) and the second fixing block (320).

3. The linkage according to claim 1, characterized in that: The bracket (400) is mounted on the housing (100) via a fixing plate (700); The bracket (400) has a mounting portion (420) that fits against one side of the housing (100), and the fixing plate (700) fixes the mounting portion (420) to the housing (100) by a first rivet (710) and a second rivet (720).

4. The linkage according to claim 3, characterized in that: The first rivet (710) and the second rivet (720) are distributed vertically.

5. The linkage according to claim 4, characterized in that: The connecting rod (500) has a hook groove (501) near its upper end. When the swing arm (600) is in the second position, the first rivet (710) is engaged in the hook groove (501) to limit the stroke of the swing arm (600).

6. The linkage according to claim 1, characterized in that: The outer shell (100) has a set of symmetrical inner wall surfaces provided with linear grooves (101), which extend along the length direction of the outer shell (100).

7. The linkage according to claim 1, characterized in that: A through groove (102) is provided on one side of the housing (100), and when the swing arm (600) swings from the first position to the second position, the lower end of the connecting rod (500) extends out from the through groove (102).

8. The linkage according to claim 1, characterized in that: The swing arm (600) is provided with a first connecting part (610) and a second connecting part (620). The first connecting part is connected to the end of the connecting rod (500), and the second connecting part (620) is connected to the guide part (410) of the bracket (400).

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