Fixing structure of shield pump junction box

Abstract

The utility model relates to a fixing structure of a shield pump junction box, which comprises a connecting part, a box body and a cover plate, the cover plate is provided with a matching part, the matching part is used for being matched with the connecting part, so that the box body and the cover plate are fixed on a casing at one time, a cavity is formed among the casing, the box body and the cover plate, and the cavity is used for accommodating a cable. The junction box has the advantages that the junction box is fixed on the machine shell at one time after wiring is completed, the junction box is closed, the connection mode is simpler, the space needed by wiring is not limited by the junction box, and therefore the size of the junction box is smaller.

Description

Technical Field

[0001] The present application relates to the technical field of water pump junction boxes, and in particular to a fixing structure of a shielded pump junction box. Background Art

[0002] The junction box is an essential component of the water pump. It is used to achieve reliable connection between the internal motor and the external power supply, provide wiring space, and protect the wiring. However, the junction box needs to be connected to the motor housing before wiring. After the wiring is completed, the junction box needs to be closed, making the connection method cumbersome and the wiring space required larger, which in turn leads to a larger junction box. Utility Model Content

[0003] In response to the shortcomings of the existing technology, one of the purposes of this application is to provide a fixing structure for a shielded pump junction box, which has the advantage of fixing the junction box on the casing and closing the junction box at one time after the wiring is completed, making the connection method simpler, and the space required for wiring is not restricted by the junction box, thereby making the size of the junction box smaller.

[0004] The above-mentioned purpose of this application is achieved through the following technical solutions:

[0005] A fixing structure for a shielded pump junction box includes a connecting portion, a box body and a cover plate. The cover plate is provided with a matching portion, which is used to cooperate with the connecting portion so that the box body and the cover plate are fixed to the casing at one time. A cavity is formed between the casing, the box body and the cover plate, and the cavity is used to accommodate cables.

[0006] By adopting the above technical solution, the connecting portion fixes the box body and the cover plate to the casing at one time, so that the junction box can be connected to the casing and closed after the wiring is completed, making the connection method simpler and the space required for wiring is not restricted by the junction box, thereby making the junction box smaller.

[0007] In a preferred example, the present application can be further configured as follows: a connection hole one is provided on the box body, a connection hole two is provided on the cover plate, the connection hole one and the connection hole two cooperate to form a connection hole, the connecting part is provided on the casing, and the matching part passes through the connection hole to enable the box body and the cover plate to be installed on the casing.

[0008] In a preferred example, the present application can be further configured as follows: the connecting portion is a threaded hole.

[0009] By adopting the above technical solution, the box body and the cover plate are mounted on the casing by passing the threaded hole screws through the connecting holes.

[0010] In a preferred example, the present application can be further configured as follows: the connecting portion is used to connect with the matching portion, the matching portion includes a connecting protrusion, the connecting portion includes a contact groove, and the contact groove is used to limit the position of the connecting protrusion.

[0011] By adopting the above technical solution, the contact groove limits the position of the connecting protrusion to prevent the mating part from loosening. Since the external anti-loosening gasket is eroded and loses its anti-loosening effect, the contact groove and the connecting protrusion cooperate so that there is no need to set an anti-loosening gasket when connecting the mating part and the connecting part.

[0012] In a preferred example, the present application can be further configured as follows: a contact piece and a connection groove are provided on the connection portion, the contact piece forms the contact groove, and the connection groove is used to define the position of the contact piece on the connection portion.

[0013] By adopting the above technical solution, the connecting groove defines the position of the contact piece on the connecting portion, so that the contact piece and the connecting portion are connected.

[0014] In a preferred example, the present application can be further configured as follows: a guide surface 1 and a guide surface 2 are provided on the connecting protrusion.

[0015] In a preferred example, the present application can be further configured as follows: the first guide surface is set as an inclined surface, and the second guide surface is set as an arc surface.

[0016] By adopting the above technical solution, the first guide surface set as an inclined surface makes it easier for the connecting protrusion to enter the contact groove, and the second guide surface set as an arc surface enables the connecting protrusion to exit the contact groove after being subjected to external tension.

[0017] In a preferred example, the present application can be further configured as follows: the contact member includes a deformable plate, the deformable plate is used to contact the connecting protrusion, and the end of the deformable plate is inclined in a direction away from the mating portion.

[0018] By adopting the above technical solution, the end of the deformable plate is inclined in a direction away from the matching portion, so that a certain pulling force is required for the connecting protrusion to exit the contact groove, thereby making the matching portion more effective in preventing loosening.

[0019] In a preferred example, the present application can be further configured as follows: the inclination angle of the deformable plate is not greater than 10°.

[0020] By adopting the above technical solution, it is avoided that the box body and the cover plate are difficult to be removed from the casing, and it is prevented that the deformation of the deformation plate exceeds its deformation range when the connecting protrusion withdraws from the contact groove, causing damage to the contact member.

[0021] In a preferred example, the present application can be further configured as follows: the angle between the connecting groove and the horizontal plane is 30° to 35°.

[0022] By adopting the above technical solution, the angle between the connecting groove and the horizontal plane is 30° to 35°, so that the limiting effect of the connecting groove on the contact piece is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1This is a structural diagram of Example 1 of the present application.

[0024] Figure 2 It is a schematic cross-sectional structure diagram of Example 1 of the present application.

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of Example 2 of the present application.

[0026] Figure 4 This is a schematic diagram of the cross-sectional structure of Example 3 of the present application.

[0027] Figure numerals: 1. housing; 2. box body; 3. cover plate; 4. connecting part; 5. mating part; 51. connecting protrusion; 52. guide surface one; 53. guide surface two; 6. cable; 7. connecting hole one; 8. connecting hole two; 9. contact piece; 91. deformation plate; 10. connecting groove. DETAILED DESCRIPTION

[0028] The present application is further described in detail below with reference to the accompanying drawings.

[0029] Example 1: Reference Figure 1 and Figure 2 , is a fixing structure of a shielded pump junction box disclosed in the present application, comprising a connecting portion 4, a box body 2 and a cover plate 3, the connecting portion 4 is arranged on the casing 1, and a matching portion 5 is provided on the cover plate 3, the matching portion 5 is used to extend into the connecting hole 1 7 and match with the connecting portion 4, so that the box body 2 and the cover plate 3 are fixed on the casing 1 at one time, a cavity is formed between the casing 1, the box body 2 and the cover plate 3, the cavity is used to accommodate the cable 6, the cavity is provided with a through hole, the through hole is used for the cable 6 to pass through, the box body 2 is provided with a connecting hole 1 7, the cover plate 3 is provided with a connecting hole 2 8, the connecting hole 1 7 and the connecting hole 2 8 match to form a connecting hole, the matching portion 5 passes through the connecting hole so that the box body 2 and the cover plate 3 are installed on the casing 1, so that the positions of the box body 2 and the cover plate 3 are limited. In this embodiment, a sealing ring is provided between the box body 2 and the cover plate 3, and a sealing ring is provided between the box body 2 and the casing 1, the connecting portion 4 is a threaded hole, the matching portion 5 is a bolt, and the number of the connecting portion 4 and the matching portion 5 is four groups.

[0030] Pass the cable 6 through the box body 2 to complete the connection. After the connection, place the box body 2 and the cover plate 3 in the appropriate position of the casing 1, and install the sealing ring between the box body 2 and the cover plate 3, and the sealing ring between the casing 1 and the box body 2 in place. Pass the bolts through the connecting holes and fix the box body 2 and the cover plate 3 on the casing 1 at one time.

[0031] The implementation principle of this embodiment is as follows: the connecting portion 4 fixes the box body 2 and the cover plate 3 to the casing 1 at one time, so that the junction box can be connected to the casing 1 and closed after the wiring is completed, making the connection method simpler and the space required for wiring is not restricted by the junction box, thereby making the junction box smaller.

[0032] Example 2: Reference Figure 3 The mating portion 5 is used to pass through the connecting hole and connect to the connecting portion 4. The mating portion 5 includes a connecting protrusion 51. The connecting portion 4 is provided with a plurality of contact members 9 and a connecting groove 10. The connecting groove 10 is used to limit the position of the contact member 9 on the connecting portion 4. Several contact members 9 are installed on the mating portion 5 to form a contact groove. The contact groove is used to limit the position of the connecting protrusion 51. The connecting protrusion 51 is provided with a guide surface 1 52 set as an inclined surface and a guide surface 2 53 set as an arc surface. The contact member 9 includes a deformable plate 91. The deformable plate 91 is used to contact the connecting protrusion 51. The end of the deformable plate 91 is provided with an inclination of no more than 10° in the direction away from the mating portion 5, so that the mating portion and the cover plate conflict with each other. In this embodiment, the inclination angle of the deformable plate 91 can be 4°, 5°, 6° or 8°, and the number of contact members 9 and connecting grooves 10 is set as needed.

[0033] The mating part 5 extends into the connecting hole and is connected to the connecting part 4, so that the positions of the box body 2 and the cover plate 3 are limited, and the connecting protrusion 51 on the mating part 5 extends into the contact groove, and the contact member 9 is deformed, so that the connecting protrusion 51 is limited in the contact groove. When it is necessary to withdraw, the mating part 5 is rotated to make the contact member 9 deform upward, so that the connecting protrusion 51 withdraws from the contact groove. The contact groove and the connecting protrusion 51 cooperate with each other to prevent the mating part 5 from loosening, so that there is no need to rely on anti-loosening gaskets to prevent loosening when the mating part 5 and the connecting part 4 are connected.

[0034] The implementation principle of this embodiment is as follows: the guide surface 1 52 set as an inclined surface makes it easier for the connecting protrusion 51 to enter the contact groove, and the guide surface 2 53 set as an arc surface enables the connecting protrusion 51 to withdraw from the contact groove after being subjected to tension. The end of the deformation plate 91 on the contact piece 9 is inclined in the direction away from the mating part 5, so that after the connecting protrusion 51 enters the contact groove, the deformation plate 91 applies downward pressure to the connecting protrusion 51, and the guide surface 1 52 and the guide surface 2 53 cooperate with the contact piece 9, reducing the probability of the mating part 5 loosening.

[0035] Example 3: Reference Figure 4 The connecting portion 4 is used to extend into the connecting hole 7 and connect with the matching portion 5. The angle between the connecting groove 10 and the horizontal plane is 30° to 35°, so that the connecting groove 10 has a better limiting effect on the contact member 9. The deformable plate 91 applies downward pressure to the connecting protrusion 51 so that the matching portion 5 and the cover plate 3 conflict with each other, realizing the pluggable connection function of the matching portion 5 and the connecting portion 4, making the connection between the box body 2, the cover plate 3 and the casing 1 more convenient.

[0036] The implementation principle of this embodiment is: the connection groove 10 has a better limiting effect on the contact member 9, so that the contact member 9 has a better limiting effect on the connection protrusion 51, so that the pluggable connection function of the matching part 5 and the connecting part 4 can be realized.

[0037] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A fixing structure for a canned motor pump junction box, characterized in that: The invention comprises a connecting portion (4), a box body (2) and a cover plate (3); a matching portion (5) is provided on the cover plate (3); the matching portion (5) is used to match with the connecting portion (4) so that the box body (2) and the cover plate (3) are fixed to the housing (1) at one time; a cavity is formed between the housing (1), the box body (2) and the cover plate (3); and the cavity is used to accommodate a cable (6).

2. The fixing structure of a canned motor pump junction box according to claim 1, characterized in that: The box body (2) is provided with a first connecting hole (7), and the cover plate (3) is provided with a second connecting hole (8). The first connecting hole (7) and the second connecting hole (8) cooperate to form a connecting hole. The connecting portion (4) is provided on the housing (1), and the matching portion (5) passes through the connecting hole so that the box body (2) and the cover plate (3) are installed on the housing (1).

3. The fixing structure of a canned motor pump junction box according to claim 2, characterized in that: The connecting portion (4) is a threaded hole.

4. The fixing structure of a canned motor pump junction box according to claim 2, characterized in that: The connecting portion (4) is used to connect with the matching portion (5), the matching portion (5) includes a connecting protrusion (51), and the connecting portion (4) includes a contact groove, and the contact groove is used to limit the position of the connecting protrusion (51).

5. The fixing structure of a canned motor pump junction box according to claim 4, characterized in that: A contact piece (9) and a connection groove (10) are provided on the connection portion (4). The contact piece (9) forms the contact groove, and the connection groove (10) is used to define the position of the contact piece (9) on the connection portion (4).

6. The fixing structure of a canned motor pump junction box according to claim 4, characterized in that: A first guide surface (52) and a second guide surface (53) are provided on the connecting protrusion (51).

7. The fixing structure of a canned motor pump junction box according to claim 6, characterized in that: The first guide surface (52) is set as an inclined surface, and the second guide surface (53) is set as an arc surface.

8. The fixing structure of a canned motor pump junction box according to claim 5, characterized in that: The contact member (9) includes a deformation plate (91), which is used to contact the connecting protrusion (51), and the end of the deformation plate (91) is inclined in a direction away from the matching portion (5).

9. The fixing structure of a canned motor pump junction box according to claim 8, characterized in that: The inclination angle of the deformation plate (91) is not greater than 10°.

10. The fixing structure of a canned motor pump junction box according to claim 5, characterized in that: The angle between the connecting groove (10) and the horizontal plane is 30° to 35°.

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