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

Abstract

This utility model relates to the field of low-voltage switchgear technology, specifically a unit positioning device and a movable drawer unit assembly for a movable drawer unit. The unit positioning device includes a locking component, a driving component, and positioning holes on the unit compartment shelf. The locking component is slidably mounted on the fixed part of the unit, and the rear part of the driving component is fixed to the movable part of the unit. A sliding groove-type driving structure is provided between the driving component and the locking component to drive the locking component downwards into the positioning hole, thereby positioning the movable drawer unit. The beneficial effects are: reduced front-to-back movement of the unit (actually reduced to 0.2mm), effective and accurate unit advancement stroke and main circuit connector connection depth, reduced pressure between the unit locking plate and the locking hole (force is assisted by the locking component), uniform force distribution, and reduced abnormal noise to a normal noise level.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage switchgear technology, and in particular to a unit positioning device and a movable drawer unit assembly for a movable drawer unit. Background Technology

[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 installed in the unit chamber, the unit locking mechanism on both sides of the fixed part of the unit locks the unit in the unit chamber through the unit locking plate 16. However, in order to ensure that the unit locking plate 16 can be lifted and unlocked normally, there is a 1mm front and rear mating gap between the unit locking plate 16 on both sides of the fixed part and the locking hole 17 on the unit chamber shelf.

[0003] Due to the gap between the front and rear parts, the main circuit insertion resistance generated during the process of pushing the movable part into the connection position will cause the unit to move forward by 1.0mm. This causes the end face of the locking hole 17 on the pressing plate 16 of the unit to have a slight notch and burr due to the large pressing force. As the number of operations increases, the end face will have a slight notch and burr, which will further increase the gap between the front and rear parts.

[0004] At the same time, the gap between the front and rear will also reduce the connection depth of the main circuit connector 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 noise (i.e., a bouncing sound). The production of this noise is related to poor unit advancement connection and large amount of backward movement of the fixed part. Utility Model Content

[0006] The technical problem to be solved by this utility model is that the front and rear fit gap between the unit locking plate and the locking hole on the unit compartment shelf of the existing movable drawer unit is too large, resulting in a large amount of movement and abnormal noise when the unit is removed from the connection position.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a unit positioning device for a movable drawer unit, including a locking member, a driving member, and positioning holes on the unit compartment shelf. The locking member is slidably mounted on the fixed part of the movable drawer unit. The rear part of the driving member is fixed to the movable part of the movable drawer unit, which is used to make the driving member move back and forth with the movable part. There is a sliding groove type driving structure between the driving member and the locking member, which is used to drive the locking member to slide up and down when the driving member moves back and forth with the movable part. During the process of the movable part moving from the separated position to the connected position, the driving member drives the locking member to insert downward into the positioning hole through the sliding groove type driving structure, which is used to position the movable drawer unit. The sliding groove type driving mechanism includes a driving groove and a driving pin embedded in the driving groove. The sliding groove type driving mechanism generates a driving effect through the relative movement of the driving groove and the driving pin.

[0008] In some embodiments, optionally, the drive groove of the grooving drive structure is located on the drive member, and the drive pin is disposed on the locking member.

[0009] In some embodiments, optionally, the locking member is provided with a slide plate, 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 element is already inserted into the positioning hole when the main circuit connector of the movable portion begins to be plugged in.

[0011] In some embodiments, optionally, the locking member is slidably mounted on the fixed portion of the movable drawer unit through a lower guide hole on the push-locking base plate of the fixed portion and an upper guide hole on the cover plate covering the push-locking base plate, with the locking member passing through the upper guide hole and the lower guide hole.

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

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

[0014] In some embodiments, optionally, a guide sleeve is also included, which is mounted on the propulsion interlocking base plate of the fixed portion, and the locking member and the driving member are embedded in the guide structure of the guide sleeve for movement and guidance.

[0015] In some embodiments, the locking element is optionally positioned near the propulsion mechanism of the fixed portion and located on the right side of the propulsion mechanism.

[0016] A movable drawer unit assembly includes a movable drawer unit and a unit compartment, and also includes a unit positioning device for the movable drawer unit.

[0017] The beneficial effects of this utility model are: it reduces the forward and backward movement of the unit when it enters and exits the connection position, which can actually be reduced to 0.2mm; the unit's advance stroke and the connection depth of the main circuit connector are effectively and correctly adjusted; the squeezing force between the unit locking plate and the locking hole is reduced; the locking component helps to bear the force; the force point is uniform; and the abnormal noise (i.e., the jumping sound) is also reduced to a normal noise level. Attached Figure Description

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

[0019] Figure 1 This is a schematic diagram of the assembly structure of the locking component of this utility model on the fixed part;

[0020] Figure 2 In order to be in Figure 1 A schematic diagram of the assembly structure after removing the auxiliary guide bracket;

[0021] Figure 3 In order to be in Figure 2 A schematic diagram of the assembly structure after removing the right-side cover plate;

[0022] Figure 4 for Figure 1 A schematic diagram of the assembly structure from the rear view;

[0023] Figure 5 This is a schematic diagram of the assembly structure of the locking component and the driving component of this utility model on the unit split assembly;

[0024] Figure 6 In order to be in Figure 5 A schematic diagram of the assembly structure after removing the right-side cover plate;

[0025] Figure 7 This is a diagram showing the engagement state of the unit positioning device of this utility model in the separated position;

[0026] Figure 8 This is a diagram showing the coordination state of the unit positioning device of this utility model at the test position;

[0027] Figure 9 This is a diagram showing the engagement state of the unit positioning device of this utility model in the connection position;

[0028] Figure 10 This is a schematic diagram of the rear view of the unit split assembly of this utility model;

[0029] Figure 11 This is a schematic diagram of the structure of the movable drawer unit of this utility model from the rear view.

[0030] Figure 12 This is a schematic diagram of the unit chamber structure of this utility model;

[0031] Figure 13 This is a structural schematic diagram of the movable drawer unit assembly of this utility model;

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

[0033] In the figure, 1. Locking component, 2. Driving component, 3. Unit chamber shelf, 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. Pushing interlocking base plate, 10. Cover plate, 11. Auxiliary guide bracket, 12. Guide sleeve, 13. Pushing screw, 14. Unit chamber, 15. Screw plate, 16. Unit locking plate, 17. Locking hole, 18. Slide bracket. Detailed Implementation

[0034] like Figures 1-14 As shown, a unit positioning device for a movable drawer unit includes a locking member 1, a driving member 2, and a positioning hole 4 on the unit compartment shelf 3. The locking member 1 is slidably mounted on the 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, which is used to move the driving member 2 back and forth with the movable part 6. There is a sliding groove type 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 back and forth with the movable part 6. During the process of the movable part 6 moving from the separated position to the connected position, the driving member 2 drives the locking member 1 to insert downward into the positioning hole 4 through the sliding groove type driving structure, which is used to position the movable drawer unit. The sliding groove type driving mechanism includes a driving groove 7 and a driving pin 8 embedded in the driving groove 7. The sliding groove type driving mechanism generates a driving action through the relative movement of the driving groove 7 and the driving pin 8.

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

[0036] In the sliding drive structure, the drive slide 7 is located on the drive component 2, and the drive pin 8 is located on the locking component 1. Alternatively, the locking component 1 may have a slide plate, with the drive slide 7 located on the slide plate and the drive pin 8 located on the drive component 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-lock base plate 9 of the fixed part 5 and the upper guide hole on the cover plate 10 covering the push-lock base plate 9. 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 and is used to provide auxiliary guidance for the locking member 1 above the cover plate 10. The guide sleeve 12 is mounted on the push-lock base plate 9 of the fixed part 5. Both the locking member 1 and the driving member 2 are embedded in the guide structure of the guide sleeve 12 for movement guidance.

[0039] This solution requires that the locking element 1 be inserted into the positioning hole 4 when the main circuit connector of the movable part 6 is first plugged in.

[0040] Meanwhile, because the locking member 1, which is inserted into the positioning hole 4, experiences significant force in the front-to-back direction when the main circuit connector begins to be plugged in, the front section of the drive slide 7 is designed to be a straight section. When the main circuit connector of the movable part 6 begins to be 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 undergoing downward insertion under significant force.

[0041] Therefore, in this embodiment, as Figures 7-9 As shown, the drive slide 7 is a three-section slide, consisting of a first straight section 7-1, a second straight section 7-3, and an inclined section 7-2 from front to back. 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 straight section 7-1 and the second straight section 7-3, connecting them continuously. When the movable part 6 is advanced to the test position, the drive pin 8 is in the middle position of the inclined section 7-2. At this time, the drive pin 8 has driven the locking member 1 to insert into the positioning hole 4, thus positioning the fixed part 5.

[0042] To ensure uniform force distribution on the locking member 1, the locking member 1 is positioned close to the pushing mechanism of the fixed part 5. Since there is no mounting position on the left side of the pushing mechanism of the fixed part 5 in this embodiment, the locking member 1 is positioned close to the right side of the pushing mechanism. The pushing mechanism includes a pushing screw 13 and a screw nut. The pushing screw 13 of the pushing mechanism is mounted on the fixed part, and the screw nut is mounted on the screw nut plate 15 of the movable part 6. The screw nut plate 15 is part of the base plate of the movable part. The movable part includes a base plate, which is divided into front and rear parts: the front screw nut plate 15 and the rear base plate. The screw nut plate 15 is used for mounting the screw nut.

[0043] like Figures 11-14As shown, a movable drawer unit assembly includes a movable drawer unit, a unit chamber 14, and a unit positioning device for 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 interlock base plate 9 and slide brackets 18 on both sides of the push-in interlock base plate 9. A cover plate 10 is installed on the push-in interlock base plate 9. The fixed part 5 is connected to the movable part 6 in a horizontally movable manner through the slide brackets 18. The movable part 6 includes a bottom plate, which is divided into two parts: a front threaded mother plate 15 and a rear bottom plate. The fixed part 5 and the threaded mother plate 15 constitute the unit assembly of the movable drawer unit.

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

[0046] Separated 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 shelf 3, locking the movable drawer unit. The movable part 6 of the movable drawer unit is in the separated position, and the locking element 1 is in the initial high position, such as... Figure 7 As shown.

[0047] Separation to the test position: The movable part 6 is moved by cranking the push screw 13 with the handle. When the movable part 6 is advanced to the test position, the locking member 1, driven by the drive member 2, has already inserted into the positioning hole 4. Figure 8 As shown.

[0048] Test to the connection position: Move the movable part 6 to the connection position by cranking the push screw 13 with the handle. During the advancement process, when the main circuit connector of the movable part 6 begins to connect, the drive pin 8 has already entered the first straight section 7-1, and the locking piece 1 no longer inserts downwards. Figure 9 As shown.

[0049] Pull out the movable drawer unit: Reverse the above steps and move the movable part 6 to the separation position. When the separation position is reached, 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, and the locking head of the unit locking plate 16 disengages from the locking hole 17 of the unit chamber 14, unlocking the movable drawer unit. The movable drawer unit can then be pulled out of the unit chamber 14.

Claims

1. A unit positioning device for a mobile drawer unit, characterized by: The unit includes a locking member (1), a driving member (2), and a positioning hole (4) on the unit compartment shelf (3). The locking member (1) is slidably mounted on the 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, which is used to make the driving member (2) move back and forth with the movable part (6). The driving member (2) and the locking member (1) have a sliding drive structure, which is used to drive the locking member (1) to slide up and down when the driving member (2) moves back and forth with the movable part (6). During the process of the movable part (6) moving from the separated position to the connected position, the driving member (2) drives the locking member (1) to insert downward into the positioning hole (4) through the sliding drive structure, which is used to position the movable drawer unit. The sliding drive mechanism includes a driving groove (7) and a driving pin (8) embedded in the driving groove (7). The sliding drive mechanism generates a driving effect through the relative movement of the driving groove (7) and the driving pin (8).

2. The unit positioning device for a mobile drawer unit according to claim 1, characterized in that: The drive groove (7) of the groove-type drive structure is located on the drive member (2), and the drive pin (8) is set on the locking member (1).

3. The unit positioning device for a mobile drawer unit according to claim 1, wherein: The locking member (1) is provided with a sliding plate, the driving sliding groove (7) is located on the sliding plate, and the driving pin (8) is provided on the driving member (2).

4. The unit positioning apparatus for a mobile drawer unit according to claim 1, wherein: When the main circuit connector of the movable part (6) is first plugged in, the locking element (1) has already been inserted into the positioning hole (4).

5. The unit positioning apparatus for a mobile drawer unit according to claim 1, wherein: 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). The locking member (1) passes through the upper guide hole and the lower guide hole.

6. The unit positioning arrangement for a mobile drawer unit of claim 5, wherein: It also includes an auxiliary guide bracket (11), which is mounted on the cover plate (10). The auxiliary guide bracket (11) has an auxiliary guide hole, through which the upper end of the locking member (1) passes to provide auxiliary guidance for the locking member (1) above the cover plate (10).

7. The unit positioning apparatus for a mobile drawer unit according to claim 1, wherein: The front section of the drive slide (7) is a straight section. When the main circuit connector of the movable part (6) is plugged in, the drive pin (8) has entered the straight section, and the locking member (1) has been inserted into the positioning hole (4).

8. A unit positioning device for a mobile drawer unit according to claim 5 or 6, characterized in that It also includes a guide sleeve (12), which is mounted on the push interlock 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 for the movable drawer unit according to claim 1, characterized in that: The locking element (1) is located near the propulsion mechanism of the fixed part and is located on the right side of the propulsion mechanism.

10. A mobile drawer unit assembly comprising a mobile drawer unit and a unit chamber, characterized by: It also includes a unit positioning device for the movable drawer unit as described in claim 1.

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