CN215267919U - Explosion-proof motor junction box and explosion-proof motor - Google Patents
Explosion-proof motor junction box and explosion-proof motor Download PDFInfo
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- CN215267919U CN215267919U CN202121495314.5U CN202121495314U CN215267919U CN 215267919 U CN215267919 U CN 215267919U CN 202121495314 U CN202121495314 U CN 202121495314U CN 215267919 U CN215267919 U CN 215267919U
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- connecting sleeve
- explosion
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Abstract
The utility model discloses a flame proof motor terminal box reaches flame proof motor including it, flame proof motor terminal box includes box body, cable introducing device and adapter sleeve, countersunk screw, the box body is formed with the first line hole of walking, cable introducing device is formed with the second and walks line hole, first external screw thread, the adapter sleeve is formed with the third and walks the line hole, the third walk in-line downthehole be formed with the first internal thread of first external screw thread adaptation, the adapter sleeve passes through countersunk screw connects be in on the box body. The utility model discloses explosion-proof motor terminal box is used for solving the technical problem that terminal box, cable entry device connect because of the limited inconvenient connection in space in the current explosion-proof motor.
Description
Technical Field
The utility model relates to a motor field, concretely relates to structural improvement of flame proof motor terminal box.
Background
The explosion-proof motor is also called as an explosion-proof motor, can be used in flammable and explosive places, and does not generate electric sparks during operation. Because the explosion-proof motor needs to supply power and needs to be connected with a control terminal to control the working state of the explosion-proof motor, a junction box is generally installed on the explosion-proof motor, a cable inside the motor and a cable outside the motor are led into the junction box and are connected inside the junction box, generally, a cable leading-in device is installed on the junction box and is of a sleeve structure with an explosion-proof glue layer installed inside, and the cable leading-in device can lead the cable into the junction box without changing the explosion-proof requirement of the junction box.
The junction box of the existing explosion-proof motor is fixed on one side of a shell of the explosion-proof motor, the junction box protrudes towards one side of the shell of the explosion-proof motor, when the explosion-proof motor is installed in a well with a narrow space, the space around the junction box is relatively closed, and an installer cannot reliably tighten and install a cable leading-in device on the junction box by using a wrench.
Disclosure of Invention
An object of the utility model is to provide a flame proof motor terminal box to solve terminal box, the inconvenient technical problem who connects of cable entry in the current flame proof motor because of the space is limited.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
an explosion-proof motor junction box comprises:
the box body is provided with a first wiring hole;
the cable leading-in device is provided with a second wiring hole and a first external thread;
further comprising:
the connecting sleeve is provided with a third wire hole, and a first internal thread matched with the first external thread is formed in the third wire hole;
the connecting sleeve is connected to the box body through the countersunk head screw.
In some embodiments, the first wire hole is a stepped hole, and the connecting sleeve is connected to a stepped surface of the first wire hole.
In some embodiments, the connecting sleeve is flush with the outer end of the first wiring hole.
In some embodiments, a positioning structure is formed between the connecting sleeve and the step surface of the first wiring hole.
In some embodiments, a first sealing ring is installed between the connecting sleeve and the inner wall of the first wiring hole.
In some embodiments, a first limit groove adapted to the first seal ring is formed on an outer wall of the connecting sleeve.
In some embodiments, a second sealing ring is mounted between the cable lead-in device and the outer end of the third wire hole.
In some embodiments, a second limiting groove matched with the second sealing ring is formed on the outer wall of the cable leading-in device.
In some embodiments, the third wire hole is a stepped hole, and the cable lead-in device abuts against a stepped surface of the third wire hole.
Based on foretell flame proof motor terminal box, the utility model also provides a flame proof motor, it includes as above flame proof motor terminal box.
Compared with the prior art, the utility model discloses an advantage and beneficial effect are:
the connecting sleeve is additionally arranged between the box body and the cable leading-in device, the connection between the cable leading-in device and the connecting sleeve is not required to be completed in a narrow space, an installer can complete the connection in advance in different places, the cable leading-in device can be screwed in the third wiring hole of the connecting sleeve through the matching of the first external thread and the first internal thread, and in addition, the connecting sleeve can be reliably arranged on the box body through a countersunk head screw, because the head of the countersunk head screw is provided with the tool tightening groove, the countersunk head screw can be screwed by a spanner matched with the countersunk head screw, compared with a spanner matched with a cable leading-in device, the size of the spanner matched with the countersunk head screw is greatly reduced, the spanner can be suitable for operation in a narrow space, thereby the utility model discloses flame proof motor terminal box can effectively reduce the box body and the cable lead-in device the connection degree of difficulty in narrow and small space.
Other features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the invention, which is to be read in connection with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is an assembly schematic diagram of a cable lead-in device and a connecting sleeve in an embodiment of a junction box of an explosion-proof motor of the utility model;
fig. 2 is an exploded schematic view (one) of the cable lead-in device and the connecting sleeve in fig. 1;
fig. 3 is an exploded view (two) of the cable lead-in device and the connecting sleeve in fig. 1;
fig. 4 is an exploded schematic view (three) of the cable lead-in device and the connecting sleeve in fig. 1;
FIG. 5 is a schematic structural diagram of a flameproof motor housing with a box body formed in the embodiment of the flameproof motor of the present invention;
fig. 6 is a schematic structural view of the connection sleeve with the cable lead-in device in fig. 5.
Description of reference numerals:
a box body 1; a first wiring hole 11; a first section of apertures 111; a second section of bore 112; a first step surface 113; the first screw hole 12;
a cable lead-in device 2; a second wiring hole 21; a first external thread 22; a second limit groove 23;
a connecting sleeve 3; a third wiring hole 31; a first internal thread 311; a third section of apertures 312; a fourth segment of holes 313; a second step surface 314; the second screw hole 32; a first limit groove 33;
and an explosion-proof motor shell 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "horizontal", "vertical", and the like indicate orientations or positional relationships based on the positional relationships shown in the drawings. The terminology is for the purpose of describing the invention only and is not intended to be limiting of the invention since it is not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1 to 6, the embodiment of the utility model provides a flameproof motor terminal box, including box body 1, cable introducing device 2, be formed with first wiring hole 11 on box body 1, cable introducing device 2 is formed with the second wiring hole 21, first external screw thread 22.
In order to install the cable leading-in device 2 on the box body 1 in a narrow space conveniently, the junction box of the explosion-proof motor further comprises a connecting sleeve 3 and a countersunk screw (not shown in the attached drawing), a third wire-passing hole 31 is formed in the connecting sleeve 3, a first internal thread 311 matched with the first external thread 22 is formed in the third wire-passing hole 31, so that the cable leading-in device 2 is connected to the connecting sleeve 3, the connecting sleeve 3 is connected to the box body 1 through the countersunk screw, after the cable leading-in device 2, the connecting sleeve 3 and the box body 1 are connected in sequence, the first wire-passing hole 11, the third wire-passing hole 31 and the second wire-passing hole 21 are coaxially arranged to form a wire-passing channel for a cable to pass through.
In this embodiment, be connected between cable introducing device 2 and adapter sleeve 3 and need not to accomplish in narrow and small space, the installer can connect in long-distance completion in advance, do not influence the use of the instrument of screwing, in addition, because the head of countersunk screw has the instrument and screws up the groove, can select the spanner rather than the adaptation to screw it, compare cable introducing device 2 size because of the countersunk screw size and obviously reduce, the required spanner size of countersunk screw of screwing reduces greatly, can adapt to the operation in narrow and small space, thereby this embodiment flame proof motor terminal box can effectively reduce the connection degree of difficulty of box body 1 and cable introducing device 2 in narrow and small space.
Due to the fact that the cables need to be arranged in a penetrating mode, the cables can be arranged in the cable leading-in device 2 and the connecting sleeve 3 in a penetrating mode along the second wire arranging hole 21 and the third wire arranging hole 31 after the connecting sleeve 3 is connected with the cable leading-in device 2, before the connecting sleeve 3 is installed on the box body 1, the cables are arranged in the first wire arranging hole 11 in a penetrating mode, and then the connecting sleeve 3 is installed on the box body 1 through the countersunk head screws.
In some embodiments, the first wire hole 11 on the box body 1 may be a stepped hole, and the connecting sleeve 3 is installed on the stepped surface of the first wire hole 11, so that the sunken installation can reduce the exposed size of the connecting sleeve 3 and reduce the occupied space of the connecting sleeve outside the box body 1.
Referring to fig. 5, in the present embodiment, the first wire hole 11 is a two-section stepped hole, the first wire hole 11 includes a first section of hole 111, a second section of hole 112, and a first stepped surface 113 located between the first section of hole 111 and the second section of hole 112, the diameter of the first section of hole 111 is greater than that of the second end, and the connecting sleeve 3 is mounted on the first stepped surface 113 through a countersunk head screw.
Referring to fig. 6, in the present embodiment, the connecting sleeve 3 is disposed flush with the outer end of the first wire hole 11.
In order to meet the requirement of explosion suppression, a certain gap is formed between the connecting sleeve 3 and the inner wall of the first section of hole 111.
In some embodiments, in order to ensure that the screw mounting holes on the connecting sleeve 3 are aligned with the screw mounting holes on the first step surface 113, a positioning structure may be formed between the connecting sleeve 3 and the first step surface 113.
In some embodiments, the positioning structure may include a positioning hole formed in the connecting sleeve 3, and a positioning column formed on the first step surface 113.
In some embodiments, the positioning structure may include a positioning column formed on the connecting sleeve 3, and a positioning hole formed on the first step surface 113.
In some embodiments, the positioning structure may be distributed in a plurality around the third wire hole 31 of the connecting sleeve 3.
In this embodiment, in order to ensure a stable connection, a plurality of countersunk screws are connected between the box body 1 and the connection sleeve 3, and the plurality of countersunk screws surround the third wire hole 31 of the connection sleeve 3.
In some embodiments, the head of the countersunk head screw is located outside the connection sleeve 3.
In some embodiments, a countersunk hole matched with the countersunk screw can be further formed on the connecting sleeve 3.
In this embodiment, the countersunk head screw is installed from the inner side of the box body 1, the head of the countersunk head screw is located at the inner side of the box body 1, the first step surface 113 is formed with a first screw hole 12 penetrating through the box body 1, as shown in fig. 5, a second screw hole 32 with a blind hole is formed on one end surface of the connecting sleeve 3 opposite to the first step surface 113, as shown in fig. 3.
In this embodiment, in order to achieve the sealing requirement between the connection sleeve 3 and the box body 1, a first sealing ring (not shown in the drawings) is further installed between the connection sleeve 3 and the inner wall of the first section hole 111.
In order to quickly mount the first sealing ring in place, a first limiting groove 33 adapted to the first sealing ring is formed on the outer wall of the connecting sleeve 3, as shown in fig. 3 and 4, before the connecting sleeve 3 is placed in the first wire hole 11, the first sealing ring may be mounted in the first limiting groove 33 in advance, and the first limiting groove 33 is configured such that the first sealing ring cannot move when being pressed by the inner wall of the first section of hole 111.
The first sealing ring is arranged, so that the outer wall of the connecting sleeve 3 does not contact with the inner wall of the first section of hole 111.
In order to achieve the sealing requirement between the cable lead-in device 2 and the connecting sleeve 3, a second sealing ring (not shown in the figures) is mounted between the cable lead-in device 2 and the outer end of the third wire hole 31.
In order to quickly mount the first sealing ring in place, a second limiting groove 23 adapted to the second sealing ring is formed on the outer wall of the cable lead-in device 2, as shown in fig. 3 and 4, before the cable lead-in device 2 is screwed into the third wire hole 31, the second sealing ring may be mounted in the second limiting groove 23 in advance, and the second limiting groove 23 is configured such that the second sealing ring cannot move when being pressed by the outer end of the third wire hole 31.
In some embodiments, the third wire hole 31 of the connecting sleeve 3 may be a stepped hole, and when the cable lead-in device 2 is screwed into place, the cable lead-in device 2 abuts against the stepped surface of the third wire hole 31.
Referring to fig. 2, in the present embodiment, the third wire hole 31 is a two-section stepped hole, the third wire hole 31 includes a third section of hole 312, a fourth section of hole 313 and a second stepped surface 314 located between the third section of hole 312 and the fourth section of hole 313, and the cable lead-in device 2 abuts against the second stepped surface 314.
In this embodiment, the diameter of the third section of hole 312 is greater than the diameter of the fourth section of hole 313, the first internal thread 311 is formed on the inner wall of the third section of hole 312, and in order to achieve the explosion-proof requirement, the first external thread 22 and the first internal thread 311 are explosion-proof threads in this embodiment.
Based on the design of above-mentioned flame proof motor terminal box, the utility model also provides an embodiment of flame proof motor, it is shown with reference to fig. 5, fig. 6, it includes flame proof motor housing 4 and forms the terminal box on flame proof motor housing 4, the terminal box specifically adopt above-mentioned embodiment flame proof motor terminal box, owing to adopted technical scheme in above-mentioned embodiment, consequently have the beneficial effect that technical scheme brought in above-mentioned embodiment at least, no longer describe here.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. An explosion-proof motor junction box comprises:
the box body is provided with a first wiring hole;
the cable leading-in device is provided with a second wiring hole and a first external thread;
it is characterized by comprising:
the connecting sleeve is provided with a third wire hole, and a first internal thread matched with the first external thread is formed in the third wire hole;
the connecting sleeve is connected to the box body through the countersunk head screw.
2. The junction box of the flameproof motor according to claim 1, wherein the first wiring hole is a stepped hole, and the connecting sleeve is connected to a stepped surface of the first wiring hole.
3. The junction box of the flameproof motor of claim 2, wherein the connecting sleeve is flush with the outer end of the first wiring hole.
4. The junction box of the flameproof motor according to claim 2, wherein a positioning structure is formed between the connecting sleeve and the step surface of the first wiring hole.
5. The junction box of the flameproof motor according to claim 2, wherein a first seal ring is installed between the connecting sleeve and the inner wall of the first wiring hole.
6. The flameproof motor junction box of claim 5, wherein a first limiting groove adapted to the first seal ring is formed on the outer wall of the connecting sleeve.
7. The junction box of the flameproof motor of claim 1, wherein a second seal ring is installed between the cable lead-in device and the outer end of the third wiring hole.
8. The flameproof motor junction box of claim 7, wherein a second limiting groove adapted to the second seal ring is formed on the outer wall of the cable lead-in device.
9. The junction box of the flameproof motor according to claim 1, wherein the third wiring hole is a stepped hole, and the cable lead-in device abuts against a stepped surface of the third wiring hole.
10. An explosion-proof motor, characterized by comprising the explosion-proof motor junction box of any claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121495314.5U CN215267919U (en) | 2021-07-02 | 2021-07-02 | Explosion-proof motor junction box and explosion-proof motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121495314.5U CN215267919U (en) | 2021-07-02 | 2021-07-02 | Explosion-proof motor junction box and explosion-proof motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215267919U true CN215267919U (en) | 2021-12-21 |
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ID=79486275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121495314.5U Active CN215267919U (en) | 2021-07-02 | 2021-07-02 | Explosion-proof motor junction box and explosion-proof motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215267919U (en) |
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2021
- 2021-07-02 CN CN202121495314.5U patent/CN215267919U/en active Active
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