Door closer base

Abstract

The utility model discloses a door closer base which comprises a shell, an installation block and an adjusting mechanism, the installation block is arranged in the shell and provided with an installation groove, and the installation groove is used for installing a rotating shaft of a door closer. Each adjusting mechanism comprises a sliding base horizontally connected with the shell in a sliding mode and a driving piece rotationally arranged at the top of the shell, the sliding bases are used for supporting and positioning the mounting blocks, and a transmission structure is arranged between each driving piece and the corresponding sliding base. The driving piece rotates to drive the sliding base to slide in the direction close to and away from the mounting block through the transmission structure so as to adjust the position of the mounting block. According to the door closer base, the position of the installation block can be adjusted from the top of the shell, interference with the ground is avoided, and adjustment operation of the installation groove is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hardware fittings, particularly relates to a door closer base. BACKGROUND

[0002] The door closer is a hydraulic device similar to a spring on the door head, which can automatically close the door after being opened by compression and release, has the function of a spring door, and can ensure that the door is accurately and timely closed to the initial position after being opened.

[0003] Structurally, the door closer comprises a base, which is used for fixing one end of a rotating shaft, and specifically, the base comprises a shell and a mounting block, the shell is fixed to the ground, the mounting block is arranged in the shell, and a mounting groove is arranged on the mounting block and used for fixing one end of the rotating shaft.

[0004] In order to conveniently adjust the position of the mounting groove, the existing door closer base is provided with a screw on the side wall of the shell, the mounting block is tightly fixed by the screw, and the position of the mounting block can be adjusted by adjusting the screw, so that the position of the mounting groove is adjusted.

[0005] However, the existing door closer base needs to rotate the screw from the side of the shell by using a tool to adjust the position of the mounting block, and the adjustment is prone to interference with the ground, so that the adjustment operation of the mounting groove is inconvenient. SUMMARY

[0006] The utility model aims at solving one of the technical problems in the prior art. To this end, the utility model provides a door closer base, which can adjust the position of the mounting block from the top of the shell, avoid interference with the ground, and facilitate the adjustment operation of the mounting groove.

[0007] According to the door closer base provided in the utility model, the following beneficial effects are achieved:

[0008] The shell;

[0009] The mounting block is arranged in the shell, has a mounting groove, and is used for mounting the rotating shaft of the door closer.

[0010] The adjusting mechanism is arranged on the top of the shell, and the adjusting mechanism comprises a sliding seat in horizontal sliding connection with the shell and a driving member arranged on the top of the shell, the sliding seat is used for supporting and positioning the mounting block, a transmission structure is arranged between the driving member and the sliding seat, the driving member is rotated to drive the sliding seat to slide in the direction close to and away from the mounting block through the transmission structure, and the position of the mounting block is adjusted.

[0011] According to the door closer base provided in the utility model, the following beneficial effects are achieved:

[0012] 1.The utility model discloses a setting installation block in the shell, and the installation block has an installation groove for installing the rotating shaft of the door closer, so that the rotating shaft can be supported and fixed at one end by the door closer base.

[0013] 2.The utility model discloses a plurality of adjusting mechanisms, adjusting mechanism includes with the horizontal sliding connection of shell slide, rotates and sets the drive part in the top of shell, and the slide is used for supporting and positioning installation block, and the drive part and the slide are provided with transmission structure, and the drive part rotates to drive the slide to slide along the direction of approaching and moving away from the installation block through the transmission structure to adjust the position of installation block, can understand, and the drive part and the slide are provided with transmission structure, so that the rotation of drive part can drive the slide to slide through the transmission of transmission structure, simultaneously, the drive part rotates and sets in the top of shell, so that the operator can rotate the drive part from the top of shell to adjust the position of installation block, avoids the operation of operator's operation and ground interference, and further, the adjusting operation of installation groove is convenient.

[0014] According to some embodiments of the utility model, the transmission structure includes a spiral guide bar and a plurality of guide teeth, the spiral guide bar is arranged at the bottom of the drive part, and a plurality of guide teeth are arranged on the slide in the sliding direction of the slide, the spiral guide bar and a plurality of guide teeth are cooperatively driven to make the drive part rotate and drive the slide to slide.

[0015] Beneficially, the utility model discloses that the transmission structure includes a spiral guide bar and a plurality of guide teeth, the spiral guide bar is arranged at the bottom of the drive part, and a plurality of guide teeth are arranged on the slide in the sliding direction of the slide, the spiral guide bar and a plurality of guide teeth are cooperatively driven to make the drive part rotate and drive the slide to slide, can understand, by rotating the drive part, the drive part drives the spiral guide bar to rotate, so that the spiral guide bar can push the guide tooth to move when rotating, so that the slide can move with the movement of the guide tooth, so that the transmission structure can convert the rotation of the drive part into the power of driving the slide to slide, in addition, the guide tooth is provided with a plurality of guide teeth, and a plurality of guide teeth are arranged in the sliding direction of the slide, so that the transmission path of the transmission structure can be extended.

[0016] According to some embodiments of the utility model, the top of the drive part is provided with a hexagonal groove, and the hexagonal groove is used for accommodating a hexagonal spoon.

[0017] Beneficially, the utility model discloses that the top of the drive part is provided with a hexagonal groove, and the hexagonal groove is used for accommodating a hexagonal spoon, so that the drive part can be driven to rotate by the hexagonal spoon, and the operator can rotate the drive part conveniently.

[0018] According to some embodiments of the utility model, the one end of the slide close to the mounting block has a limiting convex part, the limiting convex part abuts against the inner wall of the shell to limit the maximum sliding position of the slide in the direction away from the mounting base.

[0019] Beneficially, the utility model discloses a limiting convex part is set to the one end of the slide close to the mounting block, the limiting convex part abuts against the inner wall of the shell to limit the maximum sliding position of the slide in the direction away from the mounting base, thereby, the position of the slide retreat is limited, avoid the gap between the adjusting mechanism and the mounting block caused by the too large retreat distance of the slide to cause the mounting block to shake.

[0020] According to some embodiments of the utility model, the adjusting mechanism further includes a top base, the top base is hinged with the slide, and the top base abuts against the side wall of the mounting block.

[0021] Beneficially, the utility model discloses that the adjusting mechanism further includes a top base, the top base is hinged with the slide, and the top base abuts against the side wall of the mounting block, thereby, the top base can adapt to the angle transformation of the mounting block, and further, avoid the jamming of the adjusting mechanism and the mounting block.

[0022] According to some embodiments of the utility model, the one end of the slide close to the mounting block has a cylindrical part, one side of the top base close to the slide has an arc-shaped slot, the arc-shaped slot is hinged with the cylindrical part, and the slot width of the arc-shaped slot is less than the diameter of the cylindrical part.

[0023] Beneficially, the utility model discloses that the one end of the slide close to the mounting block has a cylindrical part, one side of the top base close to the slide has an arc-shaped slot, the arc-shaped slot is hinged with the cylindrical part, and the slot width of the arc-shaped slot is less than the diameter of the cylindrical part, and it can be understood that the cylindrical part can rotate relative to the arc-shaped slot by clamping the cylindrical part with the arc-shaped slot, realizing the hinge of the slide and the mounting block, and simultaneously, the slot width of the arc-shaped slot is less than the diameter of the cylindrical part, thereby, the slot of the arc-shaped slot can prevent the cylindrical part from separating from the arc-shaped slot.

[0024] According to some embodiments of the utility model, four adjusting mechanisms are arranged, and the four adjusting mechanisms are arranged symmetrically along the center of the shell, and the four adjusting mechanisms are respectively positioned against the four side walls of the mounting block.

[0025] Beneficially, the utility model discloses that four adjusting mechanisms are arranged, the four adjusting mechanisms are arranged symmetrically along the center of the shell, and the four adjusting mechanisms are respectively positioned against the four side walls of the mounting block, thereby, the four adjusting mechanisms can abut against the mounting block from four directions, and simultaneously, by respectively adjusting the abutment positions of the four adjusting mechanisms to the mounting block, the fixed position of the mounting block can be quickly adjusted, and further, the position adjustment and positioning fixation of the adjusting mechanism to the mounting block are facilitated.

[0026] According to some embodiments of the present application, the shell comprises a bottom plate and a middle plate mounted on the bottom plate, the bottom plate is used for supporting the mounting block and the adjusting mechanism, and the middle plate is provided with a first cavity penetrating through the middle plate in an up-down direction, and the first cavity is used for accommodating the mounting block.

[0027] Beneficially, the shell comprises the bottom plate and the middle plate mounted on the bottom plate, the bottom plate is used for supporting the mounting block and the adjusting mechanism, the middle plate is provided with the first cavity penetrating through the middle plate in an up-down direction, and the first cavity is used for accommodating the mounting block, so that the mounting block is conveniently mounted in the shell.

[0028] According to some embodiments of the present application, the bottom of the middle plate is provided with a sliding groove, one end of the sliding groove is communicated with the first cavity, the sliding groove is used for accommodating the sliding seat to slide, the top of the middle plate is provided with a first through hole, the first through hole is communicated with the sliding groove, and the first through hole is used for accommodating the driving member to rotate.

[0029] Beneficially, the bottom of the middle plate is provided with the sliding groove, one end of the sliding groove is communicated with the first cavity, the sliding groove is used for accommodating the sliding seat to slide, the top of the middle plate is provided with the first through hole, the first through hole is communicated with the sliding groove, and the first through hole is used for accommodating the driving member to rotate, and it can be understood that the top wall of the sliding groove can limit the top of the sliding seat, the two side walls of the limiting groove can limit the two sides of the sliding seat, and the bottom plate can limit the bottom of the sliding seat, so that the sliding seat is conveniently guided to slide, in addition, the middle plate and the bottom plate are separately arranged, the sliding seat can be conveniently mounted between the middle plate and the bottom plate, and the first through hole is arranged on the top of the middle plate, so that the driving member rotates in the first through hole and is in transmission with the sliding seat, and the operator can rotate the driving member above the middle plate.

[0030] According to some embodiments of the present application, the shell further comprises a left top cover and a right top cover, the left top cover and the right top cover are used for covering the top of the middle plate to cover the mounting block and the adjusting mechanism, and an avoiding through groove for avoiding the rotating shaft is arranged between the left top cover and the right top cover.

[0031] Beneficially, the shell further comprises the left top cover and the right top cover, the left top cover and the right top cover are used for covering the top of the middle plate to cover the mounting block and the adjusting mechanism, and the avoiding through groove for avoiding the rotating shaft is arranged between the left top cover and the right top cover, so that the mounting block and the adjusting mechanism are avoided from being exposed, and the appearance of the base is more simple and beautiful, and the mounting block and the adjusting mechanism are protected.

[0032] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the following description, or will be learned by practice of the present application. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of a door closer base according to an embodiment of the present utility model;

[0035] Figure 2 for Figure 1 The exploded view of the part is shown;

[0036] Figure 3 for Figure 1 A schematic diagram of the structure of a door closer base after removing the left and right top covers is shown.

[0037] Figure 4 for Figure 3 The AA section view shown;

[0038] Figure 5 for Figure 3 The image shows a bottom view of the drive unit.

[0039] Reference numerals: 100-outer shell, 110-mounting block, 120-mounting groove, 130-adjustment mechanism, 140-slide seat, 150-driving component, 160-transmission structure, 170-spiral guide bar, 180-guide tooth, 190-hexagonal groove, 200-limiting protrusion, 210-top seat, 220-cylindrical part, 230-arc groove, 240-bottom plate, 250-middle plate, 260-first cavity, 270-slide groove, 280-first through hole, 290-left top cover, 300-right top cover. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] In the description of the utility model, it needs to be understood that, the direction description such as the direction or positional relation indicated by up, down, front, back, left, right etc. for the direction or positional relation shown in the drawing, is only for the convenience of describing the utility model and simplifying the description, and is not to indicate or imply that the device or element indicated must have a particular direction, configuration and operation, therefore it can not be understood as the limitation of the utility model.

[0042] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than etc. are understood as not including the number, above, below, within etc. are understood as including the number.If it is described to first and second, this is only for the purpose of distinguishing technical features, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0043] In the description of the utility model, it needs to be explained that, unless there is explicit provision and limitation, the term "mounting, connecting and connecting" should be understood broadly, for example, it can be fixedly connected, can be detachably connected, or integrally connected;It can be mechanically connected, or electrically connected;It can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements.The specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances for ordinary skilled persons in the art.

[0044] The door closer base according to the embodiments of the utility model will be described below with reference to the drawings.

[0045] Referring to Figure 1 , the utility model aims at providing an embodiment of a door closer base.

[0046] Referring to Figure 2 , Figure 3 and Figure 4 , in the embodiment, a door closer base mainly includes a shell 100, a mounting block 110 and an adjusting mechanism 130.

[0047] For the shell 100, the shell 100 is connected and fixed with the ground, and the shell 100 is used for mounting the mounting block 110 and the adjusting mechanism 130.

[0048] In some specific embodiments, the shell 100 includes a bottom plate 240 and a middle plate 250 mounted on the bottom plate 240, the bottom plate 240 is used for supporting the mounting block 110 and the adjusting mechanism 130, and the middle plate 250 is provided with a first cavity 260 penetrating up and down in the middle, and the first cavity 260 accommodates the mounting block 110, so that the mounting block 110 is conveniently mounted in the shell 100.

[0049] Specifically, the bottom plate 240 and the middle plate 250 are fixed by bolts.

[0050] Further, the bottom of the middle plate 250 is provided with a sliding groove 270, one end of the sliding groove 270 is communicated with the first cavity 260, the sliding groove 270 accommodates the sliding seat 140 to slide, and the top of the middle plate 250 is provided with a first through hole 280, the first through hole 280 is communicated with the sliding groove 270, and the first through hole 280 accommodates the driving piece 150 to rotate.

[0051] It can be understood that, by arranging the sliding groove 270 on the bottom of the middle plate 250, the top wall of the sliding groove 270 can limit the top of the sliding seat 140, the two side walls of the limiting groove can limit the two sides of the sliding seat 140, and at the same time, the bottom plate 240 can limit the bottom of the sliding seat 140, so as to facilitate the sliding guidance of the sliding seat 140. In addition, the middle plate 250 and the bottom plate 240 are arranged in a split type, so that the sliding seat 140 can be conveniently installed between the middle plate 250 and the bottom plate 240. Further, the first through hole 280 is arranged on the top of the middle plate 250, so that the driving piece 150 rotates in the first through hole 280 and is in transmission with the sliding seat 140, and the operator can rotate the driving piece 150 above the middle plate 250.

[0052] In some specific embodiments, the shell 100 further comprises a left top cover 290 and a right top cover 300, the left top cover 290 and the right top cover 300 are used to cover the upper part of the middle plate 250 to cover the mounting block 110 and the adjusting mechanism 130, and an avoiding through groove for avoiding the rotating shaft is arranged between the left top cover 290 and the right top cover 300, so as to avoid the exposure of the mounting block 110 and the adjusting mechanism 130, thereby making the appearance of the base more simple and beautiful, and at the same time, being beneficial to protecting the mounting block 110 and the adjusting mechanism 130.

[0053] Further, the left top cover 290 is provided with a first buckle, the outer side wall of the middle plate 250 is provided with a first clamping groove, the first buckle and the first clamping groove are clamped to fix the left top cover 290 and the middle plate 250, the right top cover 300 is provided with a second buckle, the outer side wall of the middle plate 250 is provided with a second clamping groove, and the second buckle and the second clamping groove are clamped to fix the right top cover 300 and the middle plate 250, so as to facilitate the installation and disassembly between the left top cover 290, the right top cover 300 and the middle plate 250.

[0054] For the mounting block 110, the mounting block 110 is arranged in the shell 100, the mounting block 110 has a mounting groove 120, the mounting groove 120 is used to mount the rotating shaft of the door closer, so that the door closer base can support and fix one end of the rotating shaft.

[0055] For the adjusting mechanism 130, the adjusting mechanism 130 is provided with several adjusting mechanisms 130, the adjusting mechanism 130 comprises a sliding seat 140 which is horizontally and slidingly connected with the shell 100, a driving member 150 which is rotationally arranged on the top of the shell 100, the sliding seat 140 is used for supporting and positioning the mounting block 110, a transmission structure 160 is arranged between the driving member 150 and the sliding seat 140, the driving member 150 is rotated to drive the sliding seat 140 to slide along the direction of approaching and moving away from the mounting block 110 through the transmission of the transmission structure 160 to adjust the position of the mounting block 110.

[0056] It can be understood that the transmission structure 160 is arranged between the driving member 150 and the sliding seat 140, so that the rotation of the driving member 150 can drive the sliding seat 140 to slide through the transmission of the transmission structure 160, at the same time, the driving member 150 is rotationally arranged on the top of the shell 100, so that the operator can rotate the driving member 150 from the top of the shell 100 to adjust the position of the mounting block 110, avoiding the operation of the operator interfering with the ground, and then facilitating the adjustment operation of the mounting groove 120.

[0057] Referring to Figure 3 and Figure 5 In some specific embodiments, the transmission structure 160 comprises a spiral guide bar 170 and a plurality of guide teeth 180, the spiral guide bar 170 is arranged on the bottom of the driving member 150, the plurality of guide teeth 180 are arranged on the sliding seat 140 along the sliding direction of the sliding seat 140, the spiral guide bar 170 and the plurality of guide teeth 180 cooperate to drive the sliding seat 140 to slide through the rotation of the driving member 150.

[0058] It can be understood that by rotating the driving member 150, the driving member 150 drives the spiral guide bar 170 to rotate, so that the spiral guide bar 170 can push the guide teeth 180 to move when rotating, so that the sliding seat 140 can move with the movement of the guide teeth 180, so that the transmission structure 160 can convert the rotation of the driving member 150 into the driving force of the sliding seat 140, in addition, the plurality of guide teeth 180 are arranged along the sliding direction of the sliding seat 140, so as to prolong the transmission path of the transmission structure 160.

[0059] It should be explained that the spiral guide bar 170 extends along the shape of the Archimedes spiral.

[0060] Further, the top of the driving member 150 is provided with a hexagonal groove 190, the hexagonal groove 190 is used for accommodating a hexagonal spoon, so that the driving member 150 can be driven to rotate by the hexagonal spoon, and then the operator can rotate the driving member 150.

[0061] In some specific embodiments, the transmission structure 160 comprises a worm gear and a rack gear, the driving member 150 is a worm, the worm gear is arranged on the top of the shell 100, the worm gear is in meshing transmission with the worm, and the rack gear is arranged on the sliding seat 140 and extends along the sliding direction of the sliding seat 140. Thus, the operator rotates the worm on the top of the shell 100 to drive the worm gear to rotate, and then the worm gear drives the rack gear to move, so that the rack gear drives the sliding seat 140 to slide.

[0062] In some specific embodiments, the sliding seat 140 is provided with a limiting protrusion 200 at one end close to the mounting block 110, and the limiting protrusion 200 abuts against the inner wall of the shell 100 to limit the maximum sliding position of the sliding seat 140 away from the mounting block 110, so as to limit the backward position of the sliding seat 140 and avoid the mounting block 110 from shaking due to the gap between the adjusting mechanism 130 and the mounting block 110.

[0063] In some specific embodiments, the adjusting mechanism 130 further comprises a top seat 210 hinged to the sliding seat 140, and the top seat 210 abuts against the side wall of the mounting block 110, so that the top seat 210 can adapt to the angle change of the mounting block 110, thereby avoiding the adjusting mechanism 130 from being stuck with the mounting block 110.

[0064] Specifically, the sliding seat 140 is provided with a cylindrical portion 220 at one end close to the mounting block 110, the top seat 210 is provided with an arc-shaped slot 230 at one side close to the sliding seat 140, the arc-shaped slot 230 is hinged to the cylindrical portion 220, and the slot width of the arc-shaped slot 230 is smaller than the diameter of the cylindrical portion 220.

[0065] It can be understood that the cylindrical portion 220 can rotate relative to the arc-shaped slot 230 by being hinged to the arc-shaped slot 230, so as to realize the hinging of the sliding seat 140 and the mounting block 110, and the slot width of the arc-shaped slot 230 is smaller than the diameter of the cylindrical portion 220, so that the slot of the arc-shaped slot 230 can prevent the cylindrical portion 220 from being separated from the arc-shaped slot 230.

[0066] In some specific embodiments, the adjusting mechanism 130 is provided with four adjusting mechanisms 130, the four adjusting mechanisms 130 are arranged symmetrically in pairs along the center of the shell 100, and the four adjusting mechanisms 130 are respectively positioned in abutment with the four side walls of the mounting block 110.

[0067] The four adjusting mechanisms 130 are arranged symmetrically along the center of the shell 100, and the four adjusting mechanisms 130 are respectively in abutment with the four side walls of the mounting block 110, so that the four adjusting mechanisms 130 can abut against the mounting block 110 from four directions, and the abutment positions of the four adjusting mechanisms 130 on the mounting block 110 are adjusted respectively, so that the fixed position of the mounting block 110 can be quickly adjusted, and then the position adjustment and positioning of the mounting block 110 by the adjusting mechanism 130 are facilitated.

[0068] In the description of the present specification, the description of the terms "one embodiment, some embodiments, illustrative embodiments, examples, specific examples, or some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples as appropriate.

[0069] The terms "first, second, third, fourth" and the like (if any) in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein.

[0070] It should also be noted that in the description of the present specification, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or sequence between the entities or operations.

[0071] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can also include other steps or units not clearly listed or inherent to the process, method, product or device.

[0072] Also, the term "comprise", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0073] The embodiments of the utility model are explained in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A door closer base, characterised in that, Include: The shell (100); Mounting block (110), provided in the shell (100), with mounting slot (120), the mounting slot (120) is used for installing the rotating shaft of the door closer; Adjusting mechanism (130) is provided with several, including with the shell (100) horizontal sliding connection sliding seat (140), rotatingly arranged on the top of the shell (100) driving element (150), the sliding seat (140) is used for supporting positioning the mounting block (110), the driving element (150) and the sliding seat (140) between the transmission structure (160) is arranged, the driving element (150) rotates to drive the sliding seat (140) to slide along the direction close to and away from the mounting block (110) through the transmission structure (160) to adjust the position of the mounting block (110).

2. A door closer base as claimed in claim 1, wherein The transmission structure (160) includes helical guide bar (170) and several guide teeth (180), the helical guide bar (170) is arranged at the bottom of the driving element (150), and several guide teeth (180) are arranged on the sliding seat (140) along the sliding direction of the sliding seat (140), the helical guide bar (170) and several guide teeth (180) are matched and driven to make the driving element (150) rotate to drive the sliding seat (140) to slide.

3. A door closer base as claimed in claim 2, wherein The top of the driving element (150) is provided with a hexagonal groove (190), and the hexagonal groove (190) is used for accommodating a hexagonal spoon.

4. A door closer unit according to claim 1, wherein The end of the sliding seat (140) close to the mounting block (110) has a limiting convex part (200), and the limiting convex part (200) abuts against the inner wall of the shell (100) to limit the maximum sliding position of the sliding seat (140) away from the mounting block (110).

5. A door closer unit according to claim 1, wherein The adjusting mechanism (130) further comprises a top seat (210), which is hinged with the sliding seat (140), and the top seat (210) abuts against the side wall of the mounting block (110).

6. A door closer unit according to claim 5, wherein The end of the sliding seat (140) close to the mounting block (110) has a cylindrical part (220), and the side of the top seat (210) close to the sliding seat (140) has an arc-shaped groove (230), the arc-shaped groove (230) is hinged with the cylindrical part (220), and the slot width of the arc-shaped groove (230) is less than the diameter of the cylindrical part (220).

7. A door closer unit according to claim 1, wherein The adjusting mechanism (130) is provided with 4, 4 adjusting mechanisms (130) are arranged symmetrically along the center of the shell (100), and 4 adjusting mechanisms (130) are respectively abutted and positioned with the four side walls of the mounting block (110).

8. A door closer unit according to claim 1, wherein The shell (100) includes a bottom plate (240) and a middle plate (250) mounted on the bottom plate (240), the bottom plate (240) is used for supporting the mounting block (110) and the adjusting mechanism (130), and the middle plate (250) is provided with a first cavity (260) penetrating up and down in the middle, and the first cavity (260) accommodates the mounting block (110).

9. A door closer unit according to claim 8, wherein The bottom of the middle plate (250) is provided with a sliding groove (270), one end of the sliding groove (270) is communicated with the first cavity (260), the sliding groove (270) accommodates the sliding of the sliding seat (140), the top of the middle plate (250) is provided with a first through hole (280), the first through hole (280) is communicated with the sliding groove (270), and the first through hole (280) accommodates the rotation of the driving piece (150).

10. A door closer unit according to claim 8, wherein The shell (100) further comprises a left top cover (290) and a right top cover (300), the left top cover (290) and the right top cover (300) are used for covering the upper part of the middle plate (250) to cover the mounting block (110) and the adjusting mechanism (130), and an avoiding through groove for avoiding the rotating shaft is arranged between the left top cover (290) and the right top cover (300).

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