Unit positioning device of movable drawer unit and movable drawer unit assembly

Abstract

The invention relates to the technical field of low-voltage switch cabinets, in particular to a unit positioning device of a movable drawer unit and a movable drawer unit assembly.The unit positioning device comprises a locking piece, a driving piece and a positioning hole in a unit chamber laminate, and the locking piece is installed on a fixed part of the unit in an up-down sliding mode; the rear portion of the driving piece is fixed to the movable part of the unit, and a sliding groove type driving structure is arranged between the driving piece and the locking piece and used for driving the locking piece to be inserted into the positioning hole downwards to position the movable drawer unit. The invention has the beneficial effects that the front-back displacement of the unit is reduced and can be actually reduced to 0.2 mm, the pushing stroke of the unit and the connection depth of a main circuit connector are effective and correct, the extrusion force between the unit locking plate and the locking hole is reduced, the stress is assisted by the locking piece, the stress points are uniform, and the abnormal sound is also reduced to a normal noise state.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage switch cabinets, in particular to a unit positioning device of a movable drawer unit and a movable drawer unit assembly. Background Art

[0002] The movable drawer unit of the low-voltage switchgear includes a fixed part and a movable part. The movable part is connected to the main circuit by moving its position. After the unit is placed in the unit room, the unit locking mechanism on both sides of the fixed part of the unit locks the unit in the unit room through the unit locking plate 16. However, in order to ensure that the unit locking plate 16 can be lifted up and unlocked normally, the unit locking plates 16 on both sides of the fixed part and the locking holes 17 on the unit room layer plate have a front-to-back matching gap of 1mm that cannot be reduced.

[0003] Due to this front-to-back clearance, the main circuit insertion resistance generated during the process of pushing the movable component into the connection position will cause the unit as a whole to move forward by 1.0 mm, causing the unit locking plate 16 to squeeze the end face of the locking hole 17 on the layer plate. Due to the large squeezing force, as the number of operations increases, the end face will have slight notches and burrs, further increasing the front-to-back clearance.

[0004] At the same time, this front-to-back clearance will also cause the connection depth of the main circuit connector to be reduced by 1mm when the unit enters the connection position.

[0005] In addition, when the movable part exits the connection position, the fixed part will move backward and produce a loud abnormal noise (i.e., a jumping sound). The production of this abnormal noise is related to the poor propulsion connection of the unit and the large amount of movement of the fixed part. Summary of the Invention

[0006] The technical problem to be solved by the present invention is that the front-to-back matching clearance between the unit locking plate of the existing movable drawer unit and the locking hole on the unit chamber layer plate is too large, resulting in large movement and loud abnormal noise when the unit is withdrawn from the connection position.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a unit positioning device of a movable drawer unit, including a locking member, a driving member and a positioning hole on the unit chamber layer plate, the locking member can be slidably installed on the fixed part of the movable drawer unit up and down, the rear part of the driving member is fixed to the movable part of the movable drawer unit, for making the driving member move back and forth together with the movable part, and a sliding groove driving structure is provided between the driving member and the locking member, for driving the locking member to slide up and down when the driving member moves back and forth together with the movable part, and in the process of the movable part moving from the separation position to the connection position, the driving member drives the locking member downward through the sliding groove driving structure to insert into the positioning hole, for positioning the movable drawer unit, the sliding groove driving mechanism includes a driving slide and a driving pin embedded in the driving slide, and the sliding groove driving mechanism generates a driving action through the relative movement of the driving slide and the driving pin.

[0008] In some embodiments, optionally, the driving slot of the slot-type driving structure is located on the driving member, and the driving pin is provided on the locking member.

[0009] In some embodiments, optionally, a slide plate is provided on the locking member, the driving slide is located on the slide plate, and the driving pin is provided on the driving member.

[0010] In some embodiments, optionally, the locking member has been inserted into the positioning hole when the main circuit connector of the movable part begins to be plugged in and connected.

[0011] In some embodiments, optionally, the locking member can be slidably installed on the fixed part of the movable drawer unit through a lower guide hole on the push-interlock substrate of the fixed part and an upper guide hole on the cover plate covering the push-interlock substrate, and the locking member passes through the upper guide hole and the lower guide hole.

[0012] In some embodiments, optionally, the unit positioning device of the movable drawer unit also includes an auxiliary guide bracket, which is mounted on the cover plate. The auxiliary guide bracket has an auxiliary guide hole, and the upper end of the locking member passes through the auxiliary guide hole for auxiliary guiding the locking member above the cover plate.

[0013] In some embodiments, optionally, the front section of the driving slot is a straight section, and when the main circuit connector of the movable part begins to be plugged in and connected, the driving pin has entered the straight section and the locking piece has been inserted into the positioning hole.

[0014] In some embodiments, optionally, a guide sleeve is further included, wherein the guide sleeve is mounted on the propulsion interlocking substrate of the fixed part, and the locking member and the driving member are embedded in the guide structure of the guide sleeve for movement guidance.

[0015] In some embodiments, optionally, the locking member is disposed adjacent to the propulsion mechanism of the fixed portion and is located on the right side of the propulsion mechanism.

[0016] A movable drawer unit assembly comprises a movable drawer unit and a unit chamber, and also comprises a unit positioning device of the movable drawer unit.

[0017] The beneficial effects of the present invention are: the forward and backward movement of the unit when entering and exiting the connection position is reduced, which can actually be reduced to 0.2mm, the unit advancement stroke and the connection depth of the main circuit connector are effective and correct, the extrusion force between the unit locking plate and the locking hole is reduced, the locking part helps to bear the force, the force points are uniform, and the abnormal noise (i.e., jumping sound) is also reduced to a normal noise state. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and examples;

[0019] Figure 1 It is a schematic diagram of the assembly structure of the locking member of the present invention on the fixed part;

[0020] Figure 2 For Figure 1 Schematic diagram of the assembly structure after removing the auxiliary guide bracket;

[0021] Figure 3 For Figure 2 Schematic diagram of the assembly structure after removing the cover on the right side;

[0022] Figure 4 for Figure 1 Schematic diagram of the assembly structure from the back perspective;

[0023] Figure 5 It is a schematic diagram of the assembly structure of the locking member and the driving member on the unit split assembly of the present invention;

[0024] Figure 6 For Figure 5 Schematic diagram of the assembly structure after removing the cover on the right side;

[0025] Figure 7 This is a diagram showing the mating state of the unit positioning device of the present invention when in a separated position;

[0026] Figure 8 This is a diagram showing the coordinated state of the unit positioning device of the present invention in the test position;

[0027] Figure 9 This is a diagram showing the mating state of the unit positioning device of the present invention when in the connected position;

[0028] Figure 10 This is a schematic diagram of the structure of the unit split assembly of the present invention from a rear perspective;

[0029] Figure 11This is a schematic structural diagram of the movable drawer unit of the present invention from a rear perspective;

[0030] Figure 12 It is a structural schematic diagram of a unit chamber of the present invention;

[0031] Figure 13 It is a structural schematic diagram of the movable drawer unit assembly of the present invention;

[0032] Figure 14 for Figure 13 AA section view;

[0033] In the figure, 1. locking member, 2. driving member, 3. unit chamber layer plate, 4. positioning hole, 5. fixed part, 6. movable part, 7. driving slide, 7-1. first straight section, 7-2. inclined section, 7-3. second straight section, 8. driving pin, 9. push interlocking base plate, 10. cover plate, 11. auxiliary guide bracket, 12. guide sleeve, 13. push screw, 14. unit chamber, 15. motherboard, 16. unit locking plate, 17. locking hole, 18. slide bracket. DETAILED DESCRIPTION

[0034] like Figures 1 to 14 As shown, a unit positioning device of a movable drawer unit includes a locking member 1, a driving member 2 and a positioning hole 4 on a unit chamber layer plate 3. The locking member 1 can be slidably installed on the fixed part 5 of the movable drawer unit up and down. The rear part of the driving member 2 is fixed to the movable part 6 of the movable drawer unit, which is used to make the driving member 2 move forward and backward with the movable part 6. There is a sliding groove driving structure between the driving member 2 and the locking member 1, which is used to drive the locking member 1 to slide up and down when the driving member 2 moves forward and backward with the movable part 6. In the process of the movable part 6 moving from the separation position to the connection position, the driving member 2 drives the locking member 1 downward to insert into the positioning hole 4 through the sliding groove driving structure, which is used to position the movable drawer unit. The sliding groove driving mechanism includes a driving groove 7 and a driving pin 8 embedded in the driving groove 7. The sliding groove driving mechanism generates a driving effect by the relative movement of the driving groove 7 and the driving pin 8.

[0035] The locking member 1 is a rod-shaped member, the driving member 2 is a plate member, and the fitting clearance between the locking member 1 and the positioning hole 4 is designed to be 0.1 mm. The corresponding forward and backward movement of the unit is reduced to 0.2 mm.

[0036] The driving chute 7 of the chute type driving structure is located on the driving member 2, and the driving pin 8 is provided on the locking member 1. Of course, it is not excluded that a chute plate is provided on the locking member 1, the driving chute 7 is located on the chute plate, and the driving pin 8 is provided on the driving member 2.

[0037] The locking member 1 is slidably mounted on the fixed part 5 of the movable drawer unit through the lower guide hole on the push interlock base plate 9 of the fixed part 5 and the upper guide hole on the cover plate 10 covering the push interlock base plate 9, and the locking member 1 passes through the upper guide hole and the lower guide hole.

[0038] The unit positioning device of the movable drawer unit also includes an auxiliary guide bracket 11 and a guide sleeve 12. The auxiliary guide bracket 11 is mounted on the cover plate 10 and has an auxiliary guide hole. The upper end of the locking member 1 passes through the auxiliary guide hole to provide auxiliary guidance for the locking member 1 above the cover plate 10. The guide sleeve 12 is mounted on the push-interlock base plate 9 of the fixed portion 5. The locking member 1 and the driving member 2 are both embedded in the guide structure of the guide sleeve 12 for movement and guidance.

[0039] This solution requires that the locking member 1 has been inserted into the positioning hole 4 when the main circuit connector of the movable part 6 begins to be plugged in and connected.

[0040] At the same time, because the locking member 1 inserted into the positioning hole 4 is subjected to significant force in the forward and backward directions when the main circuit connector is initially plugged in, the front section of the drive slot 7 is designed to be a straight section. When the main circuit connector of the movable portion 6 is initially plugged in, the drive pin 8 has already entered this straight section, and the locking member 1 has already been inserted into the positioning hole 4. This design prevents the locking member 1 from continuing to insert downward despite being subjected to significant force.

[0041] Therefore, in this embodiment, if Figures 7-9 As shown, the drive chute 7 is a three-section chute, divided from front to back into a first straight section 7-1, a second straight section 7-3, and an inclined section 7-2. The first straight section 7-1 and the second straight section 7-3 are arranged vertically, with the first straight section 7-1 located below the second straight section 7-3. The inclined section 7-2 is located between the first and second straight sections 7-1 and 7-3, connecting them together. When the movable portion 6 is advanced to the test position, the drive pin 8 is located in the middle of the inclined section 7-2. At this point, the drive pin 8 has already driven the locking member 1 into the positioning hole 4, thereby positioning the fixed portion 5.

[0042] To ensure uniform force is applied to the locking member 1, it is positioned adjacent to the propulsion mechanism of the fixed portion 5. Because there is no mounting location on the left side of the propulsion mechanism of the fixed portion 5 in this embodiment, the locking member 1 is positioned adjacent to the right side of the propulsion mechanism. The propulsion mechanism includes a propulsion screw 13 and a nut. The propulsion screw 13 of the propulsion mechanism is mounted on the fixed portion, and the nut is mounted on a screed plate 15 of the movable portion 6. The screed plate 15 is part of the base plate of the movable portion. The movable portion includes the base plate, which is divided into two parts: the front screed plate 15 and the rear base plate. The screed plate 15 is used to mount the nut.

[0043] like Figures 11-14As shown, a movable drawer unit assembly includes a movable drawer unit, a unit chamber 14 and the above-mentioned unit positioning device of the movable drawer unit.

[0044] The movable drawer unit includes a fixed part 5 and a movable part 6. The fixed part 5 includes a push-in interlocking substrate 9 and a slide bracket 18 on both sides of the push-in interlocking substrate 9. A cover plate 10 is installed on the push-in interlocking substrate 9. The fixed part 5 is connected to the movable part 6 through the slide bracket 18 so as to be movably moved forward and backward. The movable part 6 includes a bottom plate, which is divided into two parts, namely a front silk motherboard 15 and a rear bottom plate. The fixed part 5 and the silk motherboard 15 constitute a unit split assembly of the movable drawer unit.

[0045] The three-position operation process of the movable drawer unit in this embodiment is as follows:

[0046] Separation position: The movable drawer unit is inserted into the unit chamber 14, and the locking head of the unit locking plate 16 of the unit locking mechanism is inserted into the locking hole 17 on the unit chamber layer plate 3, locking the movable drawer unit. The movable part 6 of the movable drawer unit is in the separation position, and the locking member 1 is in the initial high position, as shown in FIG. Figure 7 shown.

[0047] Separate to the test position and push: Use the crank handle to shake the screw rod 13 to push the movable part 6 to move. When the movable part 6 is pushed to the test position, the locking member 1 has been inserted into the positioning hole 4 under the drive of the driving member 2. Figure 8 shown.

[0048] Test to push to the connection position: Use the crank handle to push the screw rod 13 to push the movable part 6 to the connection position. During the pushing process, when the main circuit connector of the movable part 6 begins to be plugged in and connected, the driving pin 8 has entered the first straight section 7-1, and the locking member 1 is no longer inserted downward. Figure 9 shown.

[0049] Pull out the movable drawer unit: reverse the above steps and move the movable part 6 to the separation position. When it reaches the separation position, the locking member 1 has been pulled out of the positioning hole 4. Then, by lifting the handle of the unit locking mechanism, the unit locking plate 16 is lifted up, and the locking head of the unit locking plate 16 is disengaged from the locking hole 17 of the unit chamber 14, unlocking the movable drawer unit, and the movable drawer unit can be pulled out of the unit chamber 14.

Claims

1. A unit positioning device for a movable drawer unit, characterized by: The invention comprises a locking member (1), a driving member (2) and a positioning hole (4) on a unit chamber layer plate (3); the locking member (1) can be slidably mounted on a fixed part (5) of the movable drawer unit; the rear part of the driving member (2) is fixed to the movable part (6) of the movable drawer unit, and is used to make the driving member (2) move forward and backward together with the movable part (6); a sliding groove driving structure is provided between the driving member (2) and the locking member (1), and is used to drive the locking member (1) to slide up and down when the driving member (2) moves forward and backward together with the movable part (6); in the process of the movable part (6) moving from the separation position to the connection position, the driving member (2) drives the locking member (1) downward through the sliding groove driving structure to insert into the positioning hole (4), and is used to position the movable drawer unit; the sliding groove driving mechanism comprises a driving sliding groove (7) and a driving pin (8) embedded in the driving sliding groove (7); the sliding groove driving mechanism generates a driving effect through the relative movement of the driving sliding groove (7) and the driving pin (8).

2. The unit positioning device of the movable drawer unit according to claim 1, characterized in that: The driving chute (7) of the chute-type driving structure is located on the driving member (2), and the driving pin (8) is arranged on the locking member (1).

3. The unit positioning device of the movable drawer unit according to claim 1, characterized in that: The locking member (1) is provided with a slide plate, the driving slide (7) is located on the slide plate, and the driving pin (8) is provided on the driving member (2).

4. The unit positioning device of the movable drawer unit according to claim 1, characterized in that: When the main circuit connector of the movable part (6) begins to be plugged in and connected, the locking piece (1) has been inserted into the positioning hole (4).

5. The unit positioning device of the movable drawer unit according to claim 1, characterized in that: The locking member (1) is mounted on the fixed part (5) of the movable drawer unit in a manner that allows for upward and downward sliding through a lower guide hole on a push-interlocking base plate (9) of the fixed part (5) and an upper guide hole on a cover plate (10) covering the push-interlocking base plate (9), and the locking member (1) passes through the upper guide hole and the lower guide hole.

6. The unit positioning device of the movable drawer unit according to claim 5, characterized in that: The auxiliary guide bracket (11) is mounted on the cover plate (10), and the auxiliary guide bracket (11) has an auxiliary guide hole. The upper end of the locking member (1) passes through the auxiliary guide hole, and is used to provide auxiliary guidance for the locking member (1) above the cover plate (10).

7. The unit positioning device of the movable drawer unit according to claim 1, characterized in that: The front section of the driving slide (7) is a straight section. When the main circuit connector of the movable part (6) begins to be plugged in and connected, the driving pin (8) has entered the straight section and the locking piece (1) has been inserted into the positioning hole (4).

8. The unit positioning device of the movable drawer unit according to claim 5 or 6, characterized in that: It also includes a guide sleeve (12), which is installed on the propulsion interlocking base plate (9) of the fixed part (5), and the locking member (1) and the driving member (2) are both embedded in the guide structure of the guide sleeve (12) for movement guidance.

9. The unit positioning device of the movable drawer unit according to claim 1, characterized in that: The locking member (1) is arranged close to the propulsion mechanism of the fixed part and is located on the right side of the propulsion mechanism.

10. A movable drawer unit assembly, comprising a movable drawer unit and a unit chamber, characterized in that: It also includes the unit positioning device of the movable drawer unit according to claim 1.

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