Electrical connector housing with CPA

Abstract

An electrical connector housing with a CPA comprises a housing, the housing is hinged to a primary lock body through a pin shaft, a secondary lock sliding cavity is provided on the primary lock body, a secondary lock plate that can slide along the secondary lock sliding cavity is provided in the secondary lock sliding cavity; the secondary lock plate is in the shape of a "mountain", comprising an intermediate column, and a square column is provided on both sides of the intermediate column; two stop blocks A protruding upward are fixed to the bottom surface of the secondary lock sliding cavity, and a stop block B protruding downward is fixed to each intermediate column; a top block is fixed on the housing. Beneficial effects: Compared with the prior art, the utility model is provided with a stop block on the primary lock body, which can usually block the secondary lock from advancing, and can avoid causing the secondary lock to be locked in advance; when the primary lock is locked, the stop block is lifted up by the top block on the housing, which is convenient for the secondary lock to pass over the stop block without affecting the use of the secondary lock.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical connectors, and particularly relates to an electrical connector housing with a large current and a CPA. Background Art

[0002] High-voltage and large-current connector products are mainly used for the strong electrical connection between equipment such as new energy vehicle batteries and electric control, to achieve the function of quick plugging and unplugging and on-off. The products rely on plastic parts for insulation protection. The plug and socket adopt metal terminals, and the insertion contact is realized through a spring piece structure. The socket is installed on the electrical equipment, and the metal terminal and the copper bar terminal in the equipment box are connected by bolts.

[0003] To prevent the plug and socket of the high-voltage and large-current connector from being disengaged due to misoperation after insertion, generally, the primary lock is locked once when the assisting mechanism (hereinafter referred to as the handle) is closed, and then the secondary lock (CPA) is locked to ensure that the plug and socket are firmly inserted and not easily disengaged.

[0004] Disadvantages of the existing secondary lock: Before the secondary lock is assembled (that is, before the primary lock is locked), the secondary lock may move forward due to misoperation or other reasons, resulting in the secondary lock being locked in advance, so that the plug and socket cannot be inserted in place. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is: how to design an electrical connector housing with a CPA to avoid the secondary lock being locked in advance.

[0006] The specific solution is as follows:

[0007] An electrical connector housing with a CPA includes a housing. The housing is hinged to a primary lock body through a pin shaft. A secondary lock sliding cavity is provided on the primary lock body, and a secondary lock piece capable of sliding along it is provided in the secondary lock sliding cavity; the secondary lock piece is in the shape of a "mountain", including a middle column, and there is a square column on both sides of the middle column; two upwardly protruding anti-advancing blocks A are fixedly provided on the bottom surface of the secondary lock sliding cavity, and a downwardly protruding anti-advancing block B is fixedly provided on each of the middle columns; a top block is fixedly provided on the housing. During the locking process of the secondary lock, the top block passes over the anti-advancing block B; when the primary lock is locked, the two anti-advancing blocks A and the top block are on the same straight line.

[0008] The front contact surfaces of the anti-advancing block A and the anti-advancing block B are vertical surfaces, and the rear contact surfaces of the anti-advancing block A and the anti-advancing block B are inclined surfaces.

[0009] The front and rear sides of the top block are transitioned through inclined surfaces at the junction with the upper surface.

[0010] A blocking and retracting block is fixedly provided on the side surface of the secondary lock sliding cavity, and a backward prevention hook slideway is in front of the blocking and retracting block.

[0011] A T-shaped piece is fixed on the shell, the T-shaped piece includes a vertical bar and a horizontal bar, and the locking piece of the secondary lock includes a horizontal bar and a square column. When the secondary lock is locked, the square column is located below the horizontal bar.

[0012] The end of the secondary locking piece extends upward to form a gripping portion.

[0013] The upper surface of the stop block B is an inclined surface.

[0014] A top block slot is provided on the lower bottom surface of the middle column, and the top block can move in the top block slot. During the secondary locking process, the top block passes over the stop block B from the front of the top block slot and reaches the top block slot.

[0015] The secondary lock piece is a plastic part.

[0016] Beneficial effect: Compared with the prior art, the utility model has a stop block on the lock body of the primary lock, which can usually block the secondary lock from moving forward and avoid the secondary lock being locked prematurely; when the primary lock is locked, the stop block is lifted up by the top block on the outer shell, making it convenient for the secondary lock to pass over the stop block without affecting the use of the secondary lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the utility model when a lock is removed.

[0019] Figure 3 for Figure 2 Schematic diagram of removing a lock.

[0020] Figure 4 yes Figure 3 Enlarged schematic diagram of the T-block in the middle.

[0021] Figure 5 This is an enlarged schematic diagram of the cross section of the T-block.

[0022] Figure 6 It is a schematic diagram of the horizontal cross section of the primary lock body and the secondary lock plate.

[0023] Figure 7 This is an enlarged schematic diagram of the cross section of the middle column (a).

[0024] Figure 8 This is an enlarged schematic diagram of the cross section of the middle column (II).

[0025] Fig. 9 This is an enlarged schematic diagram of the cross section of the middle column (iii).

[0026] Fig.10 It is a three-dimensional schematic diagram with the bottom surface of the secondary locking piece facing upward. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the present utility model.

[0028] As Figure 1-2 , an electric connector housing provided with a CPA includes a housing 100. The housing 100 is hinged to a primary lock body (also called a handle) 200 through a pin shaft 110. The locking member of the primary lock includes a primary lock catch 120 on the housing 100 and a primary lock hole 210 on the primary lock body 200.

[0029] Through the cooperation of the primary lock catch 120 and the primary lock hole 210, the locking and unlocking of the primary lock are realized.

[0030] As Figure 1-2 , a secondary lock sliding cavity 220 is provided on the primary lock body 200, and a secondary lock locking piece 300 capable of sliding along it is provided in the secondary lock sliding cavity 220.

[0031] As Fig.10 , the secondary lock locking piece 300 is in the shape of a Chinese character "shan", including a middle column 320, and there is a square column 310 on each side of the middle column 320.

[0032] As Figure 3-5 , a T-shaped member 140 is fixed on the housing 100. The T-shaped member 140 includes a vertical bar and a horizontal bar 141. The locking member of the secondary lock includes the horizontal bar 141 and the square column 310. When the secondary lock is locked, the square column 310 is located below the horizontal bar 141 (see Figure 5 ).

[0033] Because the unlocking movement of the primary lock body 200 is a rotational movement centered on the pin shaft 110, and the horizontal bar 141 is located above the square column 310, which hinders the upward flipping of the square column 310 (that is, the secondary lock locking piece 300), and also hinders the upward flipping of the primary lock body 200, thus realizing the basic function of the secondary lock.

[0034] As Figure 7 、 Fig.10 , two upwardly protruding anti-advancing blocks A 230 are fixed on the bottom surface of the secondary lock sliding cavity 220, and a downwardly protruding anti-advancing block B 340 is fixed on the middle column 320.

[0035] In order to further play the role of anti-advancing and give consideration to convenient pushing out, the front contact surface 342 of the anti-advancing block A 230 and the anti-advancing block B 340 is a vertical surface (the vertical surface of the anti-advancing block B 340 can be seen in the reference numeral 321 in Fig.10 ), and the rear contact surface 343 of the anti-advancing block A 230 and the anti-advancing block B 340 is an inclined surface.

[0036] As Figure 3-5 、 Figure 8-10The top block 150 is fixed on the housing 100, and the bottom surface of the middle column 320 is provided with a top block slot 322. The top block 150 can move in the top block slot 322. During the secondary locking process, the top block 150 passes over the stop block B340 from the front of the top block slot 322 and reaches the top block slot 322, that is, Figure 8 Status to Fig. 9 state.

[0037] When the primary lock is locked, the two stop blocks A230 and the top block 150 are in a straight line.

[0038] like Figure 6 When the primary lock is not locked, in order to prevent the secondary lock piece 300 from sliding out of the secondary lock sliding cavity 220, the side of the square column 310 is fixed with an anti-backward hook 141, and the side of the secondary lock sliding cavity 220 is fixed with a back-stop block 221. The front of the back-stop block 221 is an anti-backward hook slideway 229. The anti-backward hook 141 and the back-stop block 221 cooperate with each other to prevent the secondary lock piece 300 from sliding out of the secondary lock sliding cavity 220.

[0039] like Figure 4 In order to facilitate crossing over the stop block B340, the junctions between the front and rear side surfaces 151 and the upper surface of the top block 150 are transitioned through inclined surfaces (see reference numeral 152).

[0040] like Figure 3 In order to push the secondary locking piece 300 , the end of the secondary locking piece 300 extends upward to form a gripping portion 390 .

[0041] like Figure 8 When the front end of the intermediate column 320 is lifted, in order to prevent the stop block B340 from interfering with the primary lock body 200, the upper surface of the stop block B340 is an inclined surface, see the reference numeral 346.

[0042] In order to adapt to the local elastic change, the secondary locking piece 300 is a plastic part.

[0043] The specific working process is:

[0044] One-time lock:

[0045] The locking and unlocking of the primary lock are achieved by the cooperation between the primary lock buckle 120 and the primary lock hole 210. The prior art will not be described in detail here.

[0046] Secondary lock:

[0047] A. Secondary lock not working state:

[0048] When the primary lock is not locked, the secondary lock piece 300 cannot slide forward or backward, and the blocking block 221 prevents the secondary lock piece 300 from sliding out of the secondary lock sliding cavity 220 .

[0049] At the same time, the cooperation between the stop block A230 and the stop block B340 is relied upon to prevent the secondary lock plate 300 from moving forward and entering the locked state prematurely, causing the secondary lock to fail or be damaged (because the value of the secondary lock can only be reflected when the secondary lock enters the working state after the primary lock is locked).

[0050] B. Secondary lock:

[0051] S1. When the primary lock is locked, the primary lock body 200 is attached to the outer wall of the housing 100 through the cooperation between the primary lock buckle 120 and the primary lock hole 210. At this time, the two stop blocks A230 and the top block 150 are in a straight line. Figure 7-8 .

[0052] S2. Push the secondary lock plate 300 forward, the stop block B340 gradually reaches the top of the top block 150, and the top block 150 presses against the lower surface of the stop block B340 (see Fig.10 341), and the front end of the middle column 320 is raised. At this time, the middle column 320 is in an inclined state. At the same time, the two stop blocks A230 are also located below the stop block B340.

[0053] S3, continue to push the secondary lock plate 300 forward, the stop block B340 passes over the top block 150, and also passes over the two stop blocks A230, and the middle column 320 is reset to a horizontal state, see Figure 5 ;

[0054] S4, the top block 150 slides in the top block slide groove 322 until the square column 310 is located below the horizontal bar 141 (see Figure 5 ), when the secondary lock is locked.

[0055] B. Secondary lock unlocking:

[0056] S1. Pull the secondary lock plate 300 to move backward, the stop block B340 gradually reaches the top of the top block 150, and the top block 150 presses against the lower surface of the stop block B340 (see Fig.10 341), and the front end of the middle column 320 is raised, at this time the middle column 320 is in an inclined state, and at the same time, the two stop blocks A230 are also located below the stop block B340;

[0057] S2. Continue to pull the secondary locking piece 300 to move backward, the stop block B340 passes over the top block 150 and the stop block A230, and the middle column 320 is reset to a horizontal state.

[0058] S3. The square column 310 gradually breaks away from the constraint of the horizontal bar 141, thus achieving secondary unlocking.

[0059] For other details, please refer to the prior art and will not be described in detail.

[0060] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. An electrical connector housing provided with a CPA, comprising a housing (100), wherein the housing (100) is hinged to a primary lock body (200) by a pin shaft (110), and is characterized in that: A secondary lock sliding cavity (220) is provided on the primary lock body (200), and a secondary lock locking piece (300) capable of sliding along it is provided in the secondary lock sliding cavity (220); The secondary lock locking piece (300) is in the shape of a Chinese character 'Shan', including a middle column (320), and there is a square column (310) on each side of the middle column (320); Two anti-advancing blocks A (230) protruding upward are fixed to the bottom surface of the secondary lock sliding cavity (220), and an anti-advancing block B (340) protruding downward is fixed to the middle column (320); A top block (150) is fixed on the housing (100), and during the process of locking the secondary lock, the top block (150) crosses over the anti-advancing block B (340); When the primary lock is locked, the two anti-advancing blocks A (230) and the top block (150) are on the same straight line.

2. The electrical connector housing with CPA as claimed in claim 1, characterized in that: The front contact surface (342) of the anti-advancing block A (230) and the anti-advancing block B (340) is a vertical surface, and the rear contact surface (343) of the anti-advancing block A (230) and the anti-advancing block B (340) is an inclined surface.

3. The electrical connector housing with CPA as claimed in claim 1, characterized in that: The junctions of the front and rear side surfaces (151) of the top block (150) and the upper surface are both transitioned by inclined surfaces.

4. The electrical connector housing with CPA as claimed in claim 1, characterized in that: A blocking and retracting block (221) is fixed to the side surface of the secondary lock sliding cavity (220), and in front of the blocking and retracting block (221) is an anti-rearward hooking slideway (229).

5. The electrical connector housing with CPA as claimed in claim 1, characterized in that: A T-shaped part (140) is fixed on the housing (100), the T-shaped part (140) includes a vertical bar and a horizontal bar (141), and the locking part of the secondary lock includes the horizontal bar (141) and the square column (310). When the secondary lock is locked, the square column (310) is located below the horizontal bar (141).

6. The electrical connector housing with CPA as claimed in claim 1, characterized in that: An end part of the secondary lock locking piece (300) extends upward to form a holding part (390).

7. The electrical connector housing with CPA as claimed in claim 1, characterized in that: The upper surface of the anti-advancing block B (340) is an inclined surface.

8. The electrical connector housing with CPA as claimed in claim 1, characterized in that: A top block sliding groove (322) is provided on the lower bottom surface of the middle column (320), the top block (150) can move in the top block sliding groove (322), and during the process of locking the secondary lock, the top block (150) crosses over the anti-advancing block B (340) from the front of the top block sliding groove (322) and reaches inside the top block sliding groove (322).

9. The electrical connector housing with CPA as claimed in claim 1, characterized in that: The secondary lock locking piece (300) is a plastic part.

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