Zigzag spring

Abstract

The utility model relates to the technical field of zigzag springs, in particular to a zigzag spring. In order to solve the problems that a traditional single zigzag spring is insufficient in elasticity, and an existing multi-zigzag spring combination mode is poor in elasticity superposition effect, unstable in structure and concentrated in stress due to lack of effective fixation, the following technical scheme is provided: the spring comprises a first tension spring, and a second tension spring and a third tension spring are respectively arranged on two sides of the first tension spring; the first tension spring, the second tension spring and the third tension spring respectively comprise a plurality of groups of linear sections, and an arc-shaped section is connected between every two adjacent groups of linear sections; the limiting mechanism is arranged between the second tension spring and the first tension spring and between the third tension spring and the first tension spring and used for positioning the second tension spring and the third tension spring; the fixing assembly is installed on one side of the limiting mechanism and used for fixing the second tension spring and the third tension spring. The integral elastic force is remarkably improved, the structural stability is enhanced, stress concentration is avoided, the service life is prolonged, and standardized production and installation adaptation are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of snake spring especially relates to a snake spring. BACKGROUND

[0002] As a common elastic component, snake spring is widely used in the supporting structure of furniture such as sofa and mattress and mechanical buffering device. The traditional single snake spring is limited by material characteristics and structure, and its elasticity cannot meet the use requirement when bearing large load, and problems such as excessive deformation and rapid elastic attenuation are prone to occur.

[0003] In order to improve the overall elasticity, although there are schemes for combining multiple snake springs in the prior art, simple stacking or spacing arrangement is mostly adopted, and there is lack of effective fixed connection between the snake springs. This combination method not only cannot realize the effect of superimposed enhancement of elasticity, but also is prone to cause the decline of structural stability due to the relative displacement of the snake springs when stressed, and even causes local stress concentration and shortens the service life. At the same time, the loose combination form is not conducive to the standardized production and installation adaptation of the product. In view of this, the utility model provides a snake spring. UTILITY MODEL CONTENT

[0004] The utility model aims at the problems of insufficient elasticity of traditional single snake spring, poor superimposed effect of elasticity, unstable structure and stress concentration due to lack of effective fixation in the prior art multiple snake spring combination method, and provides a snake spring.

[0005] The technical scheme of the utility model: a snake spring, comprising a first tension spring, a second tension spring and a third tension spring are arranged on both sides of the first tension spring, the first tension spring, the second tension spring and the third tension spring respectively comprise a plurality of straight line segments, and an arc segment is connected between adjacent two groups of straight line segments; a limiting mechanism is arranged between the second tension spring, the third tension spring and the first tension spring, the limiting mechanism is used for positioning the second tension spring and the third tension spring; a fixing assembly is installed on one side of the limiting mechanism, and the fixing assembly is used for fixing the second tension spring and the third tension spring.

[0006] Optionally, the limiting mechanism comprises two groups of limiting rods fixedly connected on both sides of the straight line segment, the two groups of limiting rods are located at one end of the straight line segment close to the arc segment, the limiting rod is provided in an L shape, and the second tension spring and the third tension spring are provided with clamping grooves corresponding to the limiting rods on the side surfaces.

[0007] Optionally, the fixing assembly comprises a fixing frame arranged on the side of the limiting rod away from the arc segment, the fixing frame is provided in a "H" shape, two groups of sliding blocks are fixedly connected on the side of the fixing frame close to the limiting rod, and sliding grooves corresponding to the sliding blocks are formed in the limiting rod.

[0008] Optionally, two groups of mounting grooves are symmetrically arranged in the inner side of the fixed frame, a limiting piece is arranged in the mounting groove, one end of the limiting piece is rotationally connected in the mounting groove, and an elastic piece is connected between the limiting piece and the mounting groove.

[0009] Optionally, the sliding block is a T-shaped structure.

[0010] Optionally, the second tension spring and the third tension spring are attached to the first tension spring.

[0011] Optionally, the second tension spring and the third tension spring are both in sliding connection with the limiting rod.

[0012] Optionally, the fixed frame is in sliding connection with the second tension spring and the third tension spring away from the first tension spring.

[0013] In summary, the present application has at least one of the following beneficial technical effects:

[0014] The present application has the following beneficial technical effects:

[0015] Further, the fixed assembly is used for sliding installation and anti-displacement locking between the tension springs, which is convenient for assembly and can prevent displacement of the tension springs under stress, thereby prolonging the service life.

[0016] In summary, the present application has the following beneficial technical effects: BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A structure diagram of the present application is given.

[0018] Figure 2 is a schematic diagram of the combination of the first tension spring, the second tension spring and the third tension spring.

[0019] Figure 3 is Figure 2 is an enlarged schematic diagram of A in the middle.

[0020] Figure 4 is a cross-sectional structure schematic diagram of the limiting rod.

[0021] Figure 5 is a cross-sectional structure schematic diagram of the fixed frame.

[0022] REFERENCE SIGNS:

[0023] 1, first tension spring; 11, straight section; 12, arc section.

[0024] 2, second tension spring; 3, third tension spring.

[0025] 4, limiting mechanism; 41, limiting rod; 42, clamping groove;

[0026] 5, fixing assembly; 51, fixing frame; 52, sliding block; 53, sliding slot; 54, mounting groove; 55, limiting piece; 56, elastic piece. DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0028] The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0029] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] EMBODIMENT

[0033] As Figure 1 and Figure 2As shown, the utility model provides a kind of snake spring, including first tension spring 1, first tension spring 1 two sides are provided with second tension spring 2 and third tension spring 3, second tension spring 2 and third tension spring 3 are all pasted with first tension spring 1, to facilitate the superposition enhancement of elasticity. First tension spring 1, second tension spring 2 and third tension spring 3 include multiple groups of straight line segments 11 respectively, and the arc segment 12 is connected between adjacent two groups of straight line segments 11.

[0034] Further, refer to Figures 1 to 4 , the above-mentioned snake spring includes the limiting mechanism 4 between second tension spring 2 and third tension spring 3 and first tension spring 1, and the limiting mechanism 4 is used for positioning second tension spring 2 and third tension spring 3. Limiting mechanism 4 includes two groups of limiting rods 41 fixedly connected on the two sides of straight line segment 11, and the two groups of limiting rods 41 are located at one end of straight line segment 11 close to arc segment 12 respectively, the limiting rod 41 is L-shaped, and the position of the limiting rod 41 is fixed. Second tension spring 2 and third tension spring 3 are slidably connected with the limiting rod 41, and the second tension spring 2 and the third tension spring 3 are provided with the clamping groove 42 corresponding to the limiting rod 41 on the side surface, by the arrangement of the limiting rod 41 and the clamping groove 42, after second tension spring 2 and third tension spring 3 are installed to the side surface of first tension spring 1, second tension spring 2 and third tension spring 3 are prevented from sliding, to ensure that second tension spring 2 and third tension spring 3 are pasted with first tension spring 1.

[0035] Further, as shown in Figure 2 , Figure 3 and Figure 5 , the above-mentioned snake spring further includes the fixing assembly 5 installed on one side of limiting mechanism 4, and the fixing assembly 5 is used for fixing second tension spring 2 and third tension spring 3. The fixing assembly 5 includes the fixed frame 51 arranged on the side of limiting rod 41 away from arc segment 12, the fixed frame 51 is arranged in the shape of " " character, the fixed frame 51 is slidably connected on the side of second tension spring 2 and third tension spring 3 away from first tension spring 1, two groups of sliding blocks 52 are fixedly connected on the side of fixed frame 51 close to limiting rod 41, the sliding block 52 is T-shaped structure, the limiting rod 41 is provided with the sliding groove 53 corresponding to the sliding block 52, the inner side of fixed frame 51 is provided with two groups of symmetrically arranged mounting grooves 54, the limiting piece 55 is arranged in mounting groove 54, one end of limiting piece 55 is rotatably connected in mounting groove 54, and the limiting piece 55 is connected with mounting groove 54 with elastic piece 56.

[0036] In the embodiment, when the elastic force of the first tension spring 1 is insufficient, the second tension spring 2 and the third tension spring 3 are slidably installed on the side of the first tension spring 1, and the second tension spring 2 is clamped on the limiting rod 41 through the clamping groove 42 on the side of the limiting mechanism 4, so that the second tension spring 2 and the third tension spring 3 cannot move along the length direction of the straight line segment 11. Then, the fixed frame 51 is slidably installed on the outside of the second tension spring 2 and the third tension spring 3, and the sliding block 52 installed on the side of the fixed frame 51 is slidably installed in the sliding groove 53. The second tension spring 2 and the third tension spring 3 are kept in the state of being attached to the first tension spring 1 by the fixed frame 51. When the fixed frame 51 slides on the side of the second tension spring 2 and the third tension spring 3, the limiting piece 55 contacts the second tension spring 2 or the third tension spring 3, the limiting piece 55 extrudes the elastic piece 56 and is received in the installation groove 54, and when the limiting piece 55 moves to the side of the second tension spring 2 and the third tension spring 3, the elastic piece 56 releases the elastic force to drive the limiting piece 55 to pop out of the installation groove 54, thereby preventing the fixed frame 51 from moving away from the first tension spring 1, so as to ensure that the second tension spring 2 and the third tension spring 3 are fixed on the side of the first tension spring 1.

[0037] The above specific embodiments are only optional embodiments of the present application, and based on the technical scheme of the present application and the related inspiration of the above embodiments, those skilled in the art can make various alternative improvements and combinations on the above specific embodiments.

Claims

1. A watchband, characterized by The utility model relates to a kind of spring device, including: First tension spring (1), second tension spring (2) and third tension spring (3) are respectively provided with second tension spring (2) and third tension spring (3) on both sides of first tension spring (1), and first tension spring (1), second tension spring (2) and third tension spring (3) include multiple groups of straight line segment (11), and arc segment (12) is connected between adjacent two groups of straight line segment (11); Limiting mechanism (4) is arranged between second tension spring (2) and third tension spring (3) and first tension spring (1), and the limiting mechanism (4) is used for positioning second tension spring (2) and third tension spring (3); Fixed assembly (5) is installed on one side of the limiting mechanism (4), and the fixed assembly (5) is used for fixing second tension spring (2) and third tension spring (3).

2. A snake spring according to claim 1, characterized in that The limiting mechanism (4) includes two groups of limiting rods (41) fixedly connected on both sides of straight line segment (11), and two groups of limiting rods (41) are respectively located at one end of straight line segment (11) close to arc segment (12), the limiting rod (41) is L-shaped arrangement, and the side of second tension spring (2) and third tension spring (3) is provided with clamping groove (42) corresponding with limiting rod (41).

3. A snake spring according to claim 2, wherein, The fixed assembly (5) includes fixed frame (51) arranged on the side of limiting rod (41) away from arc segment (12), the fixed frame (51) is " " character-shaped arrangement, and two groups of sliding blocks (52) are fixedly connected on the side of fixed frame (51) close to limiting rod (41), and sliding groove (53) corresponding with sliding block (52) is formed in limiting rod (41).

4. A snake spring according to claim 3, wherein, Two groups of symmetrically arranged mounting grooves (54) are formed in the inner side of fixed frame (51), limiting piece (55) is arranged in mounting groove (54), one end of limiting piece (55) is rotatably connected in mounting groove (54), and elastic piece (56) is connected between limiting piece (55) and mounting groove (54).

5. A snake spring according to claim 4, wherein, The sliding block (52) is T-shaped structure.

6. A snake spring according to claim 5, wherein, Second tension spring (2) and third tension spring (3) are attached to first tension spring (1).

7. A snake spring according to claim 6, wherein, Second tension spring (2) and third tension spring (3) are slidably connected with limiting rod (41).

8. A snake spring according to claim 7, wherein, The fixed frame (51) is slidably connected on the side of second tension spring (2) and third tension spring (3) away from first tension spring (1).

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