An asymmetric vertical double-spring folding support

Abstract

The utility model relates to connecting rod folding support technical field, concretely is an asymmetric vertical double tension spring folding support, including big arm and small arm, the top left side of big arm is through the connecting assembly and the bottom end rotation connection of small arm, the front of big arm and the front of small arm are respectively through the buckle and have big arm shell and small arm shell, the inside right end of big arm is provided with first connecting rod and second connecting rod in parallel, the top of first connecting rod and the top of second connecting rod are all connected with connecting assembly. The utility model discloses through setting up first connecting rod and second connecting rod in the inside right side of big arm, and its left side vertical direction's first tension spring and second tension spring, compared with the left and right two sides connecting rod and the left and right two sides tension spring of conventional use, the obvious material component quantity is less, directly reduces the material cost, and because the component is less, the process of assembly process is also less, and the production efficiency cost of process and relevant jigs is reduced.

Description

Technical Field

[0001] This utility model relates to the field of linkage folding bracket technology, specifically an asymmetric vertical double tension spring folding bracket. Background Technology

[0002] There are various types of folding brackets on the market, such as those with and without linkages, those with and without tension springs, and those that are single-folding and multi-folding. However, most mechanisms that use tension springs adopt symmetrical tension springs and use bilateral symmetrical linkage structures. This type of structure has more components, which increases the cost. At the same time, this type of structure results in uneven force distribution during folding and makes folding less smooth. Utility Model Content

[0003] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0004] An asymmetrical vertical double-tension-spring folding bracket includes a large arm and a small arm. The top left side of the large arm is rotatably connected to the bottom end of the small arm via a connecting assembly. The front of the large arm and the front of the small arm are respectively fastened with a large arm shell and a small arm shell via buckles. A first connecting rod and a second connecting rod are arranged parallel to each other on the right side of the inside of the large arm. The top of the first connecting rod and the top of the second connecting rod are both connected to the connecting assembly. A first tension spring and a second tension spring are connected inside the large arm and to the left of the second connecting rod. The first tension spring is located above the second tension spring. A first base and a second base are respectively provided at the bottom ends of the large arm. The bottom ends of the first connecting rod and the bottom ends of the second connecting rod are movably connected to the second base. An auxiliary component is provided at the top of the inside of the large arm and to the left of the connecting assembly.

[0005] Furthermore, the upper rear end of the upper arm is provided with a storage cavity, which is adapted to the forearm, and a mounting base is installed at the top of the forearm.

[0006] Furthermore, the top of the second base is integrally formed with a mounting block, the top right end of the mounting block is provided with a clearance groove, the inner bottom wall of the clearance groove is provided with a fourth mounting groove, and the top center of the mounting block is provided with a first mounting groove.

[0007] Furthermore, the bottom end of the second connecting rod is rotatably connected to the first mounting groove by a pin, and the bottom end of the first connecting rod is rotatably connected to the fourth mounting groove by a pin.

[0008] Furthermore, a first connecting shaft is fixedly installed at the middle of the left end of the mounting block, and a third connecting shaft is fixedly installed at the middle of the right end of the first base at a position corresponding to the first connecting shaft. A first torsion spring is sleeved on the end of the first connecting shaft away from the mounting block and the end of the third connecting shaft away from the first base. The other ends of the two first torsion springs are fixedly connected to the upper arm.

[0009] Furthermore, the connecting assembly includes a second connecting shaft and a connecting post. The connecting post is installed at the right end between the upper arm and the upper arm housing. The large end of the right end of the second connecting shaft is fixedly installed inside the left end of the connecting post. A second torsion spring is sleeved on the left end of the second connecting shaft. A second mounting groove is provided at the rear end of the middle part of the connecting post. A third mounting groove is provided at the bottom of the right end of the connecting post. The top end of the first connecting rod is rotatably connected to the inside of the third mounting groove by a pin. The top end of the second connecting rod is rotatably connected to the inside of the second mounting groove by a pin. The other end of the second torsion spring is fixedly connected to the forearm.

[0010] Furthermore, the auxiliary component includes a pressure piece and an insert, the pressure piece fitting between the boom and the boom housing, and the insert fitting inside the pressure piece and contacting the second connecting shaft.

[0011] Furthermore, the first connecting rod has a first bent portion integrally formed at the middle of its front end, and the first bent portion contacts the front end of the second connecting rod.

[0012] Furthermore, there are two second connecting rods, and the two second connecting rods are close together. The middle of the rear end of each of the two second connecting rods is integrally formed with a second bend. The two second bends bend in opposite directions. The bottom and top ends of the left second bend are integrally formed with hooks.

[0013] Furthermore, the bottom and top ends of the first tension spring are connected to the upper hook and the upper arm, respectively, and the bottom and top ends of the second tension spring are connected to the lower hook and the upper arm, respectively.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting the first and second connecting rods on the right side inside the upper arm, and the first and second tension springs in the vertical direction on the left side, the amount of material components used is significantly reduced compared with the conventional left and right connecting rods and tension springs, which directly reduces material costs. At the same time, because there are fewer components, there are fewer steps in the assembly process, which also reduces the production efficiency and cost of processes and related fixtures. The first and second tension springs are arranged vertically and parallel to the first and second connecting rods, so that the tension at both ends of the first and second connecting rods is the same. In this way, when the upper arm is folded, due to the action of the tension spring force, it can be folded up and down smoothly and evenly within a certain weight bearing range.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention from another perspective;

[0019] Figure 3 This is a partial front view structural diagram of the present invention;

[0020] Figure 4 This is a schematic diagram of the connection structure of the second base, the first connecting rod, the second connecting rod, and the connecting assembly of this utility model.

[0021] Figure 5 This is a schematic diagram of the connection structure between the second base and the first and second connecting rods of this utility model.

[0022] The markings in the diagram are as follows: 1. First base; 2. Second base; 201. Mounting block; 202. Clearance groove; 203. First mounting groove; 204. First connecting shaft; 205. First torsion spring; 3. Main arm housing; 4. Main arm; 5. Storage cavity; 6. Forearm; 7. Forearm housing; 8. Mounting seat; 9. Second connecting shaft; 901. Large end; 902. Second torsion spring; 10. Connecting post; 101. Second mounting groove; 102. Third mounting groove; 11. First connecting rod; 111. First bend; 12. Second connecting rod; 121. Second bend; 122. Hook; 13. First tension spring; 14. Second tension spring; 15. Pressure wire piece; 16. Insert. Detailed Implementation

[0023] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are merely illustrative of this utility model.

[0024] These are some, but not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0025] Please see Figures 1-5An asymmetrical vertical double-tension-spring folding bracket includes a large arm 4 and a small arm 6. The top left side of the large arm 4 is rotatably connected to the bottom end of the small arm 6 via a connecting assembly. The front of the large arm 4 and the front of the small arm 6 are respectively fastened with a large arm shell 3 and a small arm shell 7 via buckles. A first connecting rod 11 and a second connecting rod 12 are arranged parallel to each other on the right side of the interior of the large arm 4. The top of the first connecting rod 11 and the top of the second connecting rod 12 are both connected to the connecting assembly. A first tension spring 13 and a second tension spring 14 are connected to the interior of the large arm 4 to the left of the second connecting rod 12. The first tension spring 13 is located above the second tension spring 14. A first base 1 and a second base 2 are respectively provided at the bottom ends of the large arm 4. The bottom ends of the first connecting rod 11 and the second connecting rod 12 are movably connected to the second base 2. An auxiliary assembly is provided at the top of the interior of the large arm 4 to the left of the connecting assembly. The first connecting rod 11 is located on the right side of the interior of the large arm 4. Compared to conventional left and right connecting rods and springs, the first and second connecting rods 11 and 12, and the first and second tension springs 13 and 14 on their left vertical direction, significantly reduce the amount of material components used, directly lowering material costs. Simultaneously, fewer components mean fewer assembly steps, reducing production efficiency costs associated with processes and related fixtures. Furthermore, the vertical arrangement of the first and second tension springs 13 and 14 parallel to the first and second connecting rods 11 and 12 ensures equal tension at both ends. This allows the upper arm 4 to fold smoothly and evenly within a certain weight range (display weight) during operation due to the spring force. Combined with auxiliary components, this ensures smooth folding of the entire support frame, preventing swaying of the forearm 6 during folding. The first base 1 and second base 2 are connected and installed on the support body via a connecting plate, facilitating the overall use of the support frame.

[0026] Furthermore, the upper rear end of the upper arm 4 is provided with a storage cavity 5, which is adapted to the forearm 6. The top of the forearm 6 is equipped with a mounting base 8; the storage cavity 5 can store the forearm 6, which facilitates the use of the bracket.

[0027] Furthermore, the top of the second base 2 is integrally formed with a mounting block 201. The top right end of the mounting block 201 is provided with a clearance groove 202. The inner bottom wall of the clearance groove 202 is provided with a fourth mounting groove. The top center of the mounting block 201 is provided with a first mounting groove 203. The mounting block 201 and its fourth mounting groove and first mounting groove 203 can provide support for the first connecting rod 11 and the second connecting rod 12.

[0028] Furthermore, the bottom end of the second link 12 is rotatably connected to the first mounting groove 203 by a pin, and the bottom end of the first link 11 is rotatably connected to the fourth mounting groove by a pin; wherein, during the flipping process, the bottom of the first link 11 and the bottom of the second link 12 rotate around the corresponding pin, which facilitates the folding of the upper arm 4.

[0029] Furthermore, a first connecting shaft 204 is fixedly installed at the middle of the left end of the mounting block 201, and a third connecting shaft is fixedly installed at the middle of the right end of the first base 1 at a position corresponding to the first connecting shaft 204. A first torsion spring 205 is sleeved on the end of the first connecting shaft 204 away from the mounting block 201 and the end of the third connecting shaft away from the first base 1. The other ends of the two first torsion springs 205 are fixedly connected to the upper arm 4. The two first torsion springs 205 can provide elastic force when the upper arm 4 is folded, so that the upper arm 4 can rotate smoothly.

[0030] Furthermore, the connecting assembly includes a second connecting shaft 9 and a connecting post 10. The connecting post 10 is installed at the right end between the upper arm 4 and the upper arm housing 3. The large end 901 of the right end of the second connecting shaft 9 is fixedly installed inside the left end of the connecting post 10. A second torsion spring 902 is sleeved on the left end of the second connecting shaft 9. A second mounting groove 101 is provided at the rear end of the middle part of the connecting post 10. A third mounting groove 102 is provided at the bottom of the right end of the connecting post 10. The top end of the first connecting rod 11 is rotatably connected to the inside of the third mounting groove 102 by a pin. The top end of the second connecting rod 12 is rotatably connected to the inside of the second mounting groove 101 by a pin. The other end of the second torsion spring 902 is fixedly connected to the forearm 6. During the rotation of the upper arm 4, the bottom ends of the first connecting rod 11 and the second connecting rod 12 rotate on the second base 2. At the same time, the top ends of the first connecting rod 11 and the second connecting rod 12 rotate around the corresponding pins, so that the first connecting rod 11 and the second connecting rod 12 rotate smoothly.

[0031] Furthermore, the auxiliary components include a pressure piece 15 and an insert 16. The pressure piece 15 fits between the upper arm 4 and the upper arm housing 3, and the insert 16 fits inside the pressure piece 15 and contacts the second connecting shaft 9. The front end of the first connecting rod 11 has an integrally formed first bent portion 111, which contacts the front end of the second connecting rod 12. The upper arm 4 and the lower arm 6 are precisely fitted together. Since the connection between the upper arm 4 and the lower arm 6 is an asymmetrical connecting rod, the lower arm 6 only exerts its main force at the first connecting rod 11 and the second connecting rod 12 during folding movement. If the gap between the upper arm 4 and the lower arm 6 at the auxiliary component is too large, the folding movement of the lower arm 6 will be a swaying motion. Therefore, the setting of the insert 16 can effectively control its diameter accuracy and avoid the influence of the mold release degree. Since electrical wires need to pass through here, the pressure piece 15 is set, and the gap can be adjusted by tightening the screws of the pressure piece 15.

[0032] Furthermore, there are two second connecting rods 12, and the two second connecting rods 12 are attached to each other. The middle of the rear end of each of the two second connecting rods 12 is integrally formed with a second bending portion 121. The two second bending portions 121 bend in opposite directions. The bottom and top ends of the left second bending portion 121 are integrally formed with hooks 122. The two second connecting rods 12 are attached to form a whole, which not only increases the strength, but also facilitates the bending of the second bending portion 121 on it. At the same time, the first bending portion 111 cooperates with the second bending portion 121 to make the first connecting rod 11 and the second connecting rod 12 cooperate stably.

[0033] Furthermore, the bottom and top ends of the first tension spring 13 are connected to the upper hook 122 and the upper arm 4, respectively, and the bottom and top ends of the second tension spring 14 are connected to the lower hook 122 and the upper arm 4, respectively; wherein the folding of the second link 12 enables it to remain stable under the tension of the first tension spring 13 and the second tension spring 14, so that the upper arm 4 is subjected to uniform force during folding.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. An asymmetric vertical double-tension spring folding bracket, characterized in that, The arm includes a large arm (4) and a forearm (6). The top left side of the large arm (4) is rotatably connected to the bottom end of the forearm (6) via a connecting assembly. The front of the large arm (4) and the front of the forearm (6) are respectively fastened with a large arm shell (3) and a forearm shell (7) via buckles. A first connecting rod (11) and a second connecting rod (12) are arranged parallel to each other on the right side of the interior of the large arm (4). The top of the first connecting rod (11) and the top of the second connecting rod (12) are both connected to the connecting assembly. (4) is connected to a first tension spring (13) and a second tension spring (14) on the left side of the second connecting rod (12). The first tension spring (13) is located above the second tension spring (14). The bottom ends of the upper arm (4) are respectively provided with a first base (1) and a second base (2). The bottom end of the first connecting rod (11) and the bottom end of the second connecting rod (12) are movably connected to the second base (2). The top of the upper arm (4) is provided with an auxiliary component on the left side of the connecting component.

2. The asymmetric vertical double-tension spring folding bracket according to claim 1, characterized in that, The upper rear side of the upper arm (4) is provided with a storage cavity (5), which is adapted to the forearm (6), and the top of the forearm (6) is equipped with a mounting base (8).

3. The asymmetric vertical double-tension spring folding bracket according to claim 2, characterized in that, The top of the second base (2) is integrally formed with a mounting block (201). The top right end of the mounting block (201) is provided with a clearance groove (202). The inner bottom wall of the clearance groove (202) is provided with a fourth mounting groove. The top center of the mounting block (201) is provided with a first mounting groove (203).

4. The asymmetric vertical double-tension spring folding bracket according to claim 3, characterized in that, The bottom end of the second connecting rod (12) is rotatably connected to the first mounting groove (203) by a pin, and the bottom end of the first connecting rod (11) is rotatably connected to the fourth mounting groove by a pin.

5. The asymmetric vertical double-tension spring folding bracket according to claim 4, characterized in that, A first connecting shaft (204) is fixedly installed at the middle of the left end of the mounting block (201), and a third connecting shaft is fixedly installed at the middle of the right end of the first base (1) at a position corresponding to the first connecting shaft (204). A first torsion spring (205) is sleeved on the end of the first connecting shaft (204) away from the mounting block (201) and the end of the third connecting shaft away from the first base (1). The other ends of the two first torsion springs (205) are fixedly connected to the upper arm (4).

6. The asymmetric vertical double-tension spring folding bracket according to claim 5, characterized in that, The connecting assembly includes a second connecting shaft (9) and a connecting post (10). The connecting post (10) is installed at the right end between the upper arm (4) and the upper arm housing (3). The large end (901) of the right end of the second connecting shaft (9) is fixedly installed inside the left end of the connecting post (10). A second torsion spring (902) is sleeved on the left end of the second connecting shaft (9). A second mounting groove (101) is provided at the rear end of the middle part of the connecting post (10). A third mounting groove (102) is provided at the bottom of the right end of the connecting post (10). The top end of the first connecting rod (11) is rotatably connected to the inside of the third mounting groove (102) by a pin. The top end of the second connecting rod (12) is rotatably connected to the inside of the second mounting groove (101) by a pin. The other end of the second torsion spring (902) is fixedly connected to the forearm (6).

7. The asymmetric vertical double-tension spring folding bracket according to claim 6, characterized in that, The auxiliary components include a pressure piece (15) and an insert (16). The pressure piece (15) fits between the upper arm (4) and the upper arm housing (3). The insert (16) fits inside the pressure piece (15) and contacts the second connecting shaft (9).

8. The asymmetric vertical double-tension spring folding bracket according to claim 7, characterized in that, The first connecting rod (11) has a first bent portion (111) integrally formed at the middle of its front end, and the first bent portion (111) is in contact with the front end of the second connecting rod (12).

9. The asymmetric vertical double-tension spring folding bracket according to claim 8, characterized in that, There are two second connecting rods (12), and the two second connecting rods (12) are close together. The middle of the rear end of each of the two second connecting rods (12) is integrally formed with a second bending part (121). The two second bending parts (121) bend in opposite directions. The bottom and top ends of the left second bending part (121) are integrally formed with a hook (122).

10. The asymmetric vertical double-tension spring folding bracket according to claim 9, characterized in that, The bottom and top ends of the first tension spring (13) are connected to the upper hook (122) and the upper arm (4) respectively, and the bottom and top ends of the second tension spring (14) are connected to the lower hook (122) and the upper arm (4) respectively.

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