Cage type spring

Abstract

The utility model relates to a cage type spring. The technical problem to be solved by the utility model is to provide a cage spring with a good wire clamping effect. According to the technical scheme, the cage type spring comprises a spring horizontal part, one end of the spring horizontal part is bent downwards to form a spring adjusting part and a spring abutting foot in sequence, the other end of the spring horizontal part is bent inwards to form a spring arc part, a spring transition part and a spring butt joint part in sequence, a spring limiting opening is formed in the spring adjusting part, and the spring abutting foot is connected with the spring arc part. The spring adjusting part is bent inwards at the lower end of the spring limiting opening to form a spring reinforcing part. Compared with the prior art, the wire clamp has the advantages that the spring reinforcing part can prolong the contact area after a wire is clamped, the connection strength of the wire can be enhanced, the penetrating wire can be turned and clamped between the end part of the spring reinforcing part and the second wire clamping part of the spring, and the lower clamping teeth and the upper clamping teeth are arranged in a staggered manner, so that the clamping force to the wire can be enhanced when the wire is clamped, and the wire clamp is convenient to use. And the lead cannot fall off after being inserted.

Description

Technical Field

[0001] The utility model relates to the technical field of springs, in particular to a cage spring. Background Art

[0002] In the field of electrical connection, cage springs are often used in wiring terminals to fix and connect wires. For example, the cage spring described in the patent application number "202022411778.5" and the patent name "A cage spring for low-voltage electrical wiring module" includes a strip metal spring sheet that is bent and forms a closed loop, and a bayonet is provided at one end of the strip metal spring sheet, and the other end of the strip metal spring sheet passes through the bayonet and contacts with a side edge of the bayonet, and a blade surface is provided at the side edge of the bayonet. Although the blade surface theoretically improves the clamping force of the cage spring on the wire during operation, it is found in actual use that its clamping force on the wire is still lacking. Affected by frequent plugging and unplugging and the weakening of the elastic force of the cage spring, it is easy to cause the wire clamping point to loosen and fall off, and the stability is still poor. In addition, due to the small clamping contact area between the wire and the cage spring, the wire at the contact point is easy to break, resulting in poor contact, and further improvements and optimizations are made for this. Utility Model Content

[0003] In order to solve the above problems, the technical problem to be solved by the utility model is to provide a cage spring with good wire clamping effect.

[0004] The technical solution adopted by the cage spring of the utility model is characterized in that it includes a spring horizontal part, one end of the spring horizontal part is bent downward to form a spring adjustment part and a spring foot in sequence, the other end of the spring horizontal part is bent inward to form a spring arc part, a spring transition part and a spring docking part in sequence, the spring adjustment part is provided with a spring limiting opening for the action of the spring docking part, the spring adjustment part is bent inward at the lower end of the spring limiting opening to form a spring reinforcement part, the spring transition part is provided with a spring yielding opening, the spring transition part is bent downward at the spring yielding opening to form a spring second wire clamping part, a first wire clamping opening for wire clamping is formed between the spring docking part and the spring reinforcement part, a second wire clamping opening is formed between the spring second wire clamping part and the end of the spring reinforcement part, lower clamping teeth are provided at intervals at the contact point between the spring reinforcement part and the spring docking part, and upper clamping teeth staggered with the lower clamping teeth are provided at intervals on the spring docking part.

[0005] The spring reinforcing portion and the spring abutting portion are both arranged parallel to the spring horizontal portion.

[0006] The angle formed between the second spring clamping portion and the spring transition portion is greater than 90°.

[0007] The lower clamping teeth and the upper clamping teeth are both triangular structures, and the tooth height of the lower clamping teeth is greater than the tooth height of the upper clamping teeth.

[0008] The width of the second wire clamping part of the spring is smaller than the width of the spring reinforcing part, and the end of the spring reinforcing part is provided with a reinforcing part limiting groove for limiting the second wire clamping part of the spring.

[0009] The tooth height of the lower clamping teeth is 1 mm, and the tooth height of the upper clamping teeth is 0.6 mm.

[0010] The advantages of the cage spring of the utility model are: the spring reinforcement part can extend the contact area of ​​the wire after clamping, and can strengthen the connection strength of the wire; the inserted wire can be turned and clamped between the end of the spring reinforcement part and the second wire clamping part of the spring; the lower clamping teeth and the upper clamping teeth are staggered and can strengthen the clamping force of the wire, so that the wire will not fall off after insertion, and the safety is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0012] Figure 1 This is a structural schematic diagram of the utility model cage spring;

[0013] Figure 2 This is another structural schematic diagram of the cage spring of the utility model;

[0014] Figure 3 It is the front view of the cage spring of the utility model. DETAILED DESCRIPTION

[0015] like Figure 1-3As shown, the cage spring involved in the utility model comprises a spring horizontal portion 1, one end of the spring horizontal portion 1 is bent downward to form a spring adjustment portion 2 and a spring foot 3 in sequence, the other end of the spring horizontal portion 1 is bent inward to form a spring arc portion 4, a spring transition portion 5 and a spring docking portion 6 in sequence, the spring adjustment portion 2 is provided with a spring limiting opening 8 for the action of the spring docking portion 6, the spring adjustment portion 2 is bent inward at the lower end of the spring limiting opening 8 to form a spring reinforcement portion 9, a spring yielding opening 10 is provided on the spring transition portion 5, the spring transition portion 5 is bent downward at the spring yielding opening 10 to form a spring second clamping portion 11, a first clamping opening 13 for clamping a wire is formed between the spring docking portion 6 and the spring reinforcement portion 9, and a spring second clamping portion 11 and the end of the spring reinforcement portion 9 are formed. The second wire clamping opening, the contact point between the spring reinforcement part 9 and the spring docking part 6 is provided with lower clamping teeth 14 at intervals, and the spring docking part 6 is provided with upper clamping teeth 15 staggered with the lower clamping teeth 14 at intervals. The spring reinforcement part 9 can extend the contact area with the cage spring after the wire is clamped, and can strengthen the connection strength of the wire. The second wire clamping opening formed between the end of the spring reinforcement part 9 and the second wire clamping part 11 of the spring can turn and clamp the inserted wire, so that the wire will not fall off after insertion. The lower clamping teeth 14 and the upper clamping teeth 15 are staggered and can strengthen the clamping force of the wire, and the clamping is firm, so that the wire will not fall off after insertion, and the safety is higher.

[0016] The spring reinforcing portion 9 and the spring butting portion 6 are both arranged in parallel with the spring horizontal portion 1 , and parallel clamping can make the wire contact more stable.

[0017] The angle formed between the second wire clamping portion 11 of the spring and the spring transition portion 5 is greater than 90°, so that the spring inserted into the second wire clamping opening can be turned 180 degrees, and the anti-falling effect is better.

[0018] The lower clamping teeth 14 and the upper clamping teeth 15 are both triangular structures. The tooth height of the lower clamping teeth 14 is greater than the tooth height of the upper clamping teeth 15. The lower clamping teeth 14 play a main clamping role, and the upper clamping teeth 15 are auxiliary clamping. This design has a better clamping effect.

[0019] The width of the second spring clamping part 11 is smaller than the width of the spring reinforcing part 9. The end of the spring reinforcing part 9 is provided with a reinforcing part limiting groove 17 for limiting the second spring clamping part 11, which is more stable and reliable during docking.

[0020] The tooth height of the lower clamping teeth 14 is 1 mm, and the tooth height of the upper clamping teeth 15 is 0.6 mm.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. A cage spring, characterized in that: The spring comprises a horizontal spring portion (1), one end of the horizontal spring portion (1) is bent downward to form a spring adjustment portion (2) and a spring stop (3), the other end of the horizontal spring portion (1) is bent inward to form a spring arc portion (4), a spring transition portion (5) and a spring docking portion (6), the spring adjustment portion (2) is provided with a spring stop opening (8) for the spring docking portion (6) to move, the spring adjustment portion (2) is bent inward at the lower end of the spring stop opening (8) to form a spring reinforcement portion (9), the spring transition portion (5) is provided with a spring clearance opening (10), the spring transition portion (5) is downwardly extended at the spring clearance opening (10), and the spring The spring second wire clamping portion (11) is bent to form a first wire clamping opening (13) for clamping a wire is formed between the spring docking portion (6) and the spring reinforcing portion (9), a second wire clamping opening is formed between the spring second wire clamping portion (11) and the end of the spring reinforcing portion (9), lower clamping teeth (14) are provided at intervals at the contact point between the spring reinforcing portion (9) and the spring docking portion (6), and upper clamping teeth (15) are provided at intervals on the spring docking portion (6) and are staggered with the lower clamping teeth (14).

2. The cage spring according to claim 1, characterized in that: The spring reinforcing portion (9) and the spring docking portion (6) are both arranged parallel to the spring horizontal portion (1).

3. The cage spring according to claim 1, characterized in that: The angle formed between the second spring clamping portion (11) and the spring transition portion (5) is greater than 90°.

4. The cage spring according to claim 1, characterized in that: The lower clamping teeth (14) and the upper clamping teeth (15) are both triangular structures, and the tooth height of the lower clamping teeth (14) is greater than the tooth height of the upper clamping teeth (15).

5. The cage spring according to claim 1, characterized in that: The width of the second spring clamping portion (11) is smaller than the width of the spring reinforcing portion (9), and the end of the spring reinforcing portion (9) is provided with a reinforcing portion limiting groove (17) for limiting the position of the second spring clamping portion (11).

6. The cage spring according to claim 4, characterized in that: The tooth height of the lower clamping teeth (14) is 1 mm, and the tooth height of the upper clamping teeth (15) is 0.6 mm.

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