Double-floating spring needle connector

Abstract

The utility model discloses a double floating spring needle connector which comprises a needle shaft, a spring, pawl springs, a base and a needle tube, the needle shaft, the spring, the pawl springs and the needle tube are arranged in the base, two ends of the needle tube are connected with the pawl springs, the needle shaft is inserted into the pawl springs, and the spring is sleeved on the needle shaft. Two-end floating of the spring needle connector is realized on the basis of an integrated assembly formed by the pawl spring and the needle tube and a double-base bonding mode, stability and reliability of signal transmission are guaranteed by contact of the pawl spring and the needle shaft, and the spring needle connector has the advantages of high reliability, no welding, two-end floating and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of electronic connectors, and in particular relates to a double floating spring pin connector. Background Art

[0002] With the development of modern military and civilian electronic equipment, especially airborne and shipborne radar systems, the spring pin connector developed has gradually been widely used in vertical interconnection between boards due to its advantages such as small size, light weight, blind insertion and solder-free. Spring pin connectors can be used to transmit low-frequency signals such as control and power supply, as well as low-frequency radio frequency signals. The existing technology is mostly single-ended floating spring pin connectors, which lack double-ended floating connections and are not suitable for large spacing.

[0003] For example, the Chinese patent with the publication number CN115842262A discloses a spring pin connector, wherein the spring pin connector includes: a first conductor, a wave spring, and a second conductor; the first conductor includes a first contact portion and a second contact portion connected to each other, and the first contact portion is used to contact electronic components; the upper and lower ends of the wave spring are configured as conductive ends, and any conductive end of the wave spring contacts the second contact portion, and current can flow between the first conductor and the wave spring; the second conductor includes a third contact portion and a fourth contact portion connected to each other, and the other conductive end of the wave spring contacts the third contact portion, and the wave spring can be elastically deformed in the up and down directions, and the fourth contact portion is used to contact electronic components. This patent increases the maximum current that can pass through the spring pin connector, but only one side is a floating connection, and a double-end floating connection cannot be achieved. It is not suitable for large spacing and requires welding.

[0004] For example, a Chinese patent with publication number CN110416791A discloses a spring pin connector, which includes a sleeve, a contact terminal installed at one end of the sleeve, a center terminal installed at the other end of the sleeve, and a spring located in the sleeve to connect the contact terminal and the center terminal. The head of the contact terminal is exposed outside the sleeve, and the rest of the contact terminal enters the sleeve, and the first inner convex bump of the sleeve is stuck in the neck of the contact terminal, and the tooth-like protrusion of the contact terminal forms an interference fit with the sleeve. The second inner convex bump of the sleeve can slide between the first isolation part and the second isolation part along the first slide bar of the center terminal; the cantilever of the sleeve is obliquely clamped on the second slide bar of the center terminal, and the tail end is exposed outside the entire sleeve. The patent ensures that the electrical contact is more reliable through a double insurance structure, but only one side is a floating connection, and a double-end floating connection cannot be achieved, and it is not suitable for large spacing. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a double floating spring pin connector.

[0006] The utility model is realized through the following technical solutions.

[0007] The utility model provides a double floating spring needle connector, comprising a needle shaft, a spring, a claw spring, a base and a needle tube, wherein the needle shaft, spring, claw spring and needle tube are arranged in the base, claw springs are connected to both ends of the needle tube, the needle shaft is inserted into the claw spring, and the spring is sleeved on the needle shaft.

[0008] Preferably, the needle shaft comprises a needle head, a limit step A, a limit step B, a spring fixing step and a needle body, and the needle head, the limit step A, the limit step B, the spring fixing step and the needle body are connected in sequence.

[0009] Preferably, the needle body and the throat of the claw spring are connected in contact without gap, and the needle head and the base cavity C are connected in clearance fit.

[0010] Preferably, the inner diameter of the spring is larger than the spring fixing step and smaller than the limiting step B.

[0011] Preferably, the claw spring comprises a claw spring throat portion and a claw spring base, and the claw spring throat portion is connected to the claw spring base.

[0012] Preferably, the claw spring base and the assembly cavity are connected by interference fit.

[0013] Preferably, the base includes a base end face, a base cavity A, a base limiting step A, a base cavity B, a base limiting step B and a base cavity C, and the base end face, the base cavity A, the base limiting step A, the base cavity B, the base limiting step B and the base cavity C are connected in sequence.

[0014] Preferably, the base cavity A and the needle tube barb are connected by interference fit.

[0015] Preferably, the needle tube comprises a claw spring giving way cavity, a needle tube barb, a needle tube step and an assembly cavity, the claw spring giving way cavity is connected to the assembly cavity, the assembly cavity is connected to the needle tube step, and the needle tube barb is arranged on the needle tube step.

[0016] Preferably, the outer diameter of the claw spring displacement cavity is larger than the inner diameter of the assembly cavity, the needle tube barb and the base cavity A are connected by interference fit, and the diameter of the assembly cavity is larger than the outer diameter of the needle shaft and the spring.

[0017] The beneficial effects of the utility model are:

[0018] The utility model realizes floating of both ends of the spring pin connector based on an integrated assembly of a claw spring and a needle tube and a double-base bonding method. The contact between the claw spring and the needle shaft ensures the stability and reliability of signal transmission. It has the advantages of high reliability, no soldering and floating at both ends. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the needle shaft structure provided by an embodiment of the utility model;

[0021] Figure 3 It is a schematic diagram of the base structure provided by an embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of the needle tube structure provided by an embodiment of the utility model.

[0023] In the figure: 1-needle shaft, 2-spring, 3-claw spring, 4-insulating base, 5-needle tube, 11-needle head, 12-limiting step A, 13-limiting step B, 14-spring fixing step, 15-needle body, 21-base end face, 22-base cavity A, 23-base limiting step A, 24-base cavity B, 25-base limiting step B, 26-base cavity C, 31-claw spring giving way cavity, 32-needle tube barb, 33-needle tube step, 34-assembly cavity, 41-claw spring throat, 42-claw spring base. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0025] like Figure 1 As shown, a double floating spring needle connector includes a needle shaft 1, a spring 2, a claw spring 3, a base 4 and a needle tube 5. The needle shaft 1, spring 2, claw spring 3 and needle tube 5 are arranged in the base 4, the claw spring 3 is connected to both ends of the needle tube 5, the needle shaft 1 is inserted into the claw spring 3, and the spring 2 is sleeved on the needle shaft 1.

[0026] The spring 2 is sleeved on the needle shaft 1, so that the needle shaft 1 can float up and down under the elastic force of the spring 2; the claw spring 3 and the needle tube 5 are fitted with interference and seamless, establishing a reliable electrical contact between the claw spring 3 and the needle tube 5; the small end of the needle shaft 1 is inserted into the throat of the claw spring 3, establishing a reliable electrical contact between the claw spring 3 and the needle shaft 1.

[0027] The needle shaft 1 comprises a needle head 11, a limiting step A12, a limiting step B13, a spring fixing step 14 and a needle body 15, and the needle head 11, the limiting step A12, the limiting step B13, the spring fixing step 14 and the needle body 15 are connected in sequence.

[0028] The needle body 15 and the claw spring throat 41 are connected in contact without gaps, establishing a stable electrical contact; the needle head 11 and the base cavity C26 are connected in a clearance-fitting manner.

[0029] The needle 11 and the base cavity 26 are clearance-matched, so that the needle shaft 1 can float freely in the axial direction; the limiting step A12 cooperates with the base limiting step B25 to prevent the needle shaft 1 from popping out of the base 4 under the action of the spring elastic force; the limiting step B13 and the spring fixing step 14 are used to fix the spring 2 to prevent the spring 2 from becoming unstable and moving radially.

[0030] The inner diameter of the spring 2 is larger than the spring fixing step 14 and smaller than the limiting step B13, so that the spring 3 will not become unstable and move radially when compressed.

[0031] The claw spring 3 includes a claw spring throat portion 41 and a claw spring base 42 , and the claw spring throat portion 41 is connected to the claw spring base 42 .

[0032] The claw spring base 42 and the assembly cavity 34 are connected by interference fit, the base cavity A22 and the needle tube barb 32 are connected by interference fit, and the diameter of the assembly cavity 34 is larger than the outer diameter of the needle shaft 1 and the spring 2.

[0033] The claw spring base 42 and the assembly cavity 34 are connected by interference fit to establish a stable electrical contact.

[0034] The base 4 includes a base end face 21, a base cavity A22, a base limiting step A23, a base cavity B24, a base limiting step B25 and a base cavity C26. The base end face 21, the base cavity A22, the base limiting step A23, the base cavity B24, the base limiting step B25 and the base cavity C26 are connected in sequence, and the base end face 21 is bonded by epoxy glue.

[0035] The two base end faces 21 of the base 4 are bonded by epoxy adhesive to increase the structural strength of the connector.

[0036] The base limiting step B25 cooperates with the limiting step A12 to prevent the needle shaft 1 from popping out of the base 4 under the action of the spring force;

[0037] The base limiting step A23 cooperates with the needle tube step 33 to prevent the needle tube from moving axially.

[0038] The base cavity A22 and the needle tube barb 32 are connected by interference fit, which prevents the needle tube 5 from moving up and down and increases the fixity of the needle tube 5.

[0039] The needle tube 5 includes a claw spring giving way cavity 31, a needle tube barb 32, a needle tube step 33 and an assembly cavity 34, the claw spring giving way cavity 31 is connected to the assembly cavity 34, the assembly cavity 34 is connected to the needle tube step 33, and the needle tube barb 32 is arranged on the needle tube step 33.

[0040] The assembly cavity 34 is an assembly cavity for the needle shaft 1 and the spring 2, and its diameter is larger than the outer diameters of the two to prevent the needle shaft 1 from getting stuck;

[0041] The outer diameter of the claw spring displacement cavity 31 is larger than the inner diameter of the assembly cavity 34, and the needle tube barb 32 and the base cavity A22 are connected by interference fit.

[0042] The claw spring accommodation cavity 31 has a larger inner diameter than the assembly cavity 34 , so as to avoid interference between the claw spring 3 and the needle tube 5 when the claw spring 3 is docked with the needle body 15 .

[0043] The utility model designs a double floating spring pin connector, which realizes highly reliable electrical contact based on the claw spring 3, and realizes floating of both ends of the spring pin connector based on the claw spring 3 and the needle tube 5 forming an integrated assembly and a double base bonding method. The utility model has the advantages of high reliability, no soldering and double floating.

Claims

1. A double floating spring pin connector, characterized in that: The invention comprises a needle shaft (1), a spring (2), a claw spring (3), a base (4) and a needle tube (5), wherein the needle shaft (1), the spring (2), the claw spring (3) and the needle tube (5) are arranged in the base (4), the two ends of the needle tube (5) are connected to the claw spring (3), the needle shaft (1) is inserted into the claw spring (3), and the spring (2) is sleeved on the needle shaft (1).

2. A double floating spring pin connector as claimed in claim 1, characterized in that: The needle shaft (1) comprises a needle head (11), a limiting step A (12), a limiting step B (13), a spring fixing step (14) and a needle body (15); the needle head (11), the limiting step A (12), the limiting step B (13), the spring fixing step (14) and the needle body (15) are connected in sequence.

3. A double floating spring pin connector as claimed in claim 2, characterized in that: The needle body (15) and the claw spring throat (41) are connected in contact without gap, and the needle head (11) and the base cavity C (26) are connected in clearance fit.

4. A double floating spring pin connector as claimed in claim 1, characterized in that: The inner diameter of the spring (2) is larger than the spring fixing step (14) and smaller than the limiting step B (13).

5. A double floating spring pin connector as claimed in claim 1, characterized in that: The claw spring (3) comprises a claw spring throat portion (41) and a claw spring base (42), and the claw spring throat portion (41) is connected to the claw spring base (42).

6. A double floating spring pin connector as claimed in claim 5, characterized in that: The claw spring base (42) and the assembly cavity (34) are connected by interference fit.

7. A double floating spring pin connector as claimed in claim 1, characterized in that: The base (4) comprises a base end surface (21), a base cavity A (22), a base limiting step A (23), a base cavity B (24), a base limiting step B (25) and a base cavity C (26); the base end surface (21), the base cavity A (22), the base limiting step A (23), the base cavity B (24), the base limiting step B (25) and the base cavity C (26) are connected in sequence.

8. A double floating spring pin connector as claimed in claim 7, characterized in that: The base cavity A (22) and the needle tube barb (32) are connected by interference fit.

9. A double floating spring pin connector as claimed in claim 1, characterized in that: The needle tube (5) comprises a claw spring clearance chamber (31), a needle tube barb (32), a needle tube step (33) and an assembly chamber (34); the claw spring clearance chamber (31) is connected to the assembly chamber (34); the assembly chamber (34) is connected to the needle tube step (33); and the needle tube barb (32) is arranged on the needle tube step (33).

10. A double floating spring pin connector as claimed in claim 9, characterized in that: The outer diameter of the claw spring displacement chamber (31) is larger than the inner diameter of the assembly chamber (34); the needle tube barb (32) and the base chamber A (22) are connected by interference fit; and the diameter of the assembly chamber (34) is larger than the outer diameters of the needle shaft (1) and the spring (2).

Images