A boost-assisted pull handle strip wrench

Abstract

The utility model relates to a kind of boost pull handle strip wrench, wherein boost pull handle strip wrench includes shell;Driving mechanism, driving mechanism includes driving arm and power unit, the movable end of driving arm and the movable end of power unit are installed in shell and transmission is connected;Wherein, the length of driving arm is greater than the length of power unit;First power unit is provided with first power part and second power part, and first abutment portion and second abutment portion are provided on cabinet;When driving arm drives power unit rotates around first direction, first power part is in abutment with the bottom wall of mounting hole, and machine table slides into cabinet;When driving arm drives power unit rotates around second direction opposite to first direction, second power part is in abutment with the top wall of mounting hole, and machine table slides out from cabinet.The utility model can reciprocate by first power part, second power part in driving mechanism to the reciprocating abutment of the mounting hole of cabinet, and with the aid of lever effect, the effect of easy boost pull is realized.

Description

Technical Field

[0001] This utility model relates to a handle bar wrench, and more particularly to a push-pull handle bar wrench. Background Technology

[0002] The description in this section provides only background information related to the disclosure of this utility model and does not constitute prior art.

[0003] With the popularization of cloud computing and big data applications, data centers are becoming increasingly large-scale. In this context, multiple sets of corresponding data element devices can be installed on a single machine, and multi-layer machines can be installed in a unified rack. For ease of maintenance and later use, the machines and racks need to be connected by rails, so that the machines can be pulled out of the rack or pushed into the rack when needed.

[0004] Existing methods for pulling the machine into or out of the cabinet generally rely on manual labor or only provide simple handles. As the load capacity of the machine increases, manual operation becomes increasingly difficult, especially in the initial stage of pulling in or out, where there may be significant friction, making it difficult to start.

[0005] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Utility Model Content

[0006] The purpose of this utility model is to provide a push-pull lever wrench that can reciprocate against the mounting holes of the cabinet through the first and second assist parts in the drive mechanism, and achieve an easy push-pull effect by leveraging the leverage effect.

[0007] To achieve the above objectives, this utility model discloses a push-pull pull lever wrench, mounted on a machine base, wherein the machine base is inserted into a track in a cabinet, the cabinet having mounting holes with opposing top and bottom walls, and the push-pull pull lever wrench comprising: A housing, the housing being fixed to the side of the machine base facing the mounting holes of the cabinet; A drive mechanism, comprising a drive arm and an assist unit, wherein the movable end of the drive arm and the movable end of the assist unit are mounted in the housing and are connected in a transmission manner; Wherein, the length of the drive arm is greater than the length of the assist unit; The assist unit is provided with a first assist part and a second assist part, and the cabinet is provided with a first abutting part and a second abutting part; when the drive arm drives the assist unit to rotate around a first direction, the first assist part abuts against the bottom wall of the mounting hole, and the machine slides into the cabinet; when the drive arm drives the assist unit to rotate around a second direction opposite to the first direction, the second assist part abuts against the top wall of the mounting hole, and the machine slides out of the cabinet.

[0008] As a further description of the above technical solution, the assist unit includes a first assist arm and a second assist arm, the first assist part is disposed on the first assist arm, and the second assist part is disposed on the second assist arm; the movable end of the drive arm and the movable end of the first assist arm are installed in the housing and are connected in a transmission manner, and the free end of the first assist arm and the movable end of the second assist arm are connected by a rotating shaft.

[0009] As a further description of the above technical solution, the free end of the first assisting arm is provided with a first limiting surface, and the movable end of the second assisting arm is provided with a second limiting surface for abutting against the first limiting surface. After the second assisting arm rotates relative to the first assisting arm in a first direction to a first included angle, the first limiting surface abuts against the second limiting surface to limit the rotation of the second assisting arm in the first direction.

[0010] As a further description of the above technical solution, when the first limiting surface abuts against the second limiting surface, the first included angle between the first assisting arm and the second assisting arm is 0 degrees.

[0011] As a further description of the above technical solution, a torsion spring is provided at the pivot point where the free end of the first assisting arm connects to the movable end of the second assisting arm, so that when the free end of the second assisting arm is unobstructed, the second assisting arm has a tendency to rotate in the first direction; the second assisting arm has a preset length so that when the first assisting arm rotates in the first direction, the free end of the second assisting arm extends into the mounting hole under the drive of the torsion spring.

[0012] As a further description of the above technical solution, a third limiting surface is provided on the side of the free end of the first assisting arm away from the first limiting surface, and a fourth limiting surface is provided on the side of the movable end of the second assisting arm away from the second limiting surface for abutting against the third limiting surface. After the second assisting arm rotates relative to the first assisting arm in the second direction to a second included angle, the third limiting surface abuts against the fourth limiting surface to limit the rotation of the second assisting arm in the second direction. When the third limiting surface abuts against the fourth limiting surface, the first included angle between the first assisting arm and the second assisting arm is greater than 90 degrees.

[0013] As a further description of the above technical solution, the assist unit includes a third assist arm, the first assist part is disposed on the bottom side of the free end of the third assist arm, and the second assist part is disposed on the top side of the free end of the third assist arm; the movable end of the drive arm and the movable end of the third assist arm are installed in the housing and are connected in a transmission manner.

[0014] As a further description of the above technical solution, there is gear transmission between the movable end of the drive arm and the movable end of the assist unit; the drive mechanism also includes a transmission gear, which is installed in the housing and positioned between the movable end of the drive arm and the movable end of the assist unit. The movable end of the drive arm is provided with a drive gear that meshes with the transmission gear, and the movable end of the assist unit is provided with an assist gear that meshes with the transmission gear.

[0015] As a further description of the above technical solution, the movable end of the drive arm and the movable end of the assist unit are connected by a linkage; the drive mechanism also includes a first transmission arm, a second transmission arm, and a third transmission arm, the first end of the first transmission arm is fixedly connected to the movable end of the drive arm, the second end of the first transmission arm is hinged to the first end of the second transmission arm, the second end of the second transmission arm is hinged to the first end of the third transmission arm, and the second end of the third transmission arm is fixedly connected to the movable end of the assist unit.

[0016] Based on the above technical solution, the beneficial effects of this utility model are as follows: This utility model's push-pull pull lever wrench achieves easy pushing and pulling by reciprocating contact between the first and second assisting parts in the drive mechanism and the mounting holes of the cabinet, utilizing a leverage effect. Specifically, the first and second assisting parts can be located at opposite locations on the assisting unit. During pushing, the entire machine slides in by contacting the bottom wall of the mounting hole with the first assisting part; during pulling, the entire machine is pulled out by contacting the top wall of the mounting hole with the second assisting part. Since the first and second assisting parts are located on the assisting unit, a leverage effect is created between the longer assisting arm and the shorter assisting unit, allowing the operator to easily push and pull by pushing and pulling the easily maneuverable drive arm.

[0017] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, the drawings provided are for reference and illustration only and are not intended to limit this utility model. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1-4 This is a schematic diagram of the first and second assist arms of a push-pull lever wrench provided in the embodiments of this specification; Figure 5-8 This is a schematic diagram of the first and second assist arms of a pull-out lever wrench provided in the embodiments of this specification; Figure 9-11 This is a schematic diagram of the third assisting arm of a push-pull lever wrench provided in the embodiments of this specification; Figure 12-14 This is a schematic diagram of the third assisting arm of a pull-out lever provided in the embodiments of this specification; Figure 15 This is a schematic diagram of the gear transmission of a push-pull lever wrench provided in the embodiments of this specification; Figure 16 This is a schematic diagram of the linkage transmission of a push-pull lever wrench provided in the embodiments of this specification; Figure 17 This is a schematic diagram of the overall structure of a push-pull pull bar wrench provided in the embodiments of this specification; In the picture: 100. Machine base; 200. Cabinet; 300. Mounting hole; 301. Top wall; 302. Bottom wall; 400. Rail; 1. Shell; 11. Tank; 2. Drive mechanism; 21. Drive arm; 22. First assist arm; 221. First limiting surface; 222. Third limiting surface; 23. Second assist arm; 231. Second limiting surface; 232. Fourth limiting surface; 24. Transmission gear; 25. Drive gear; 26. Assist gear; 27. Third assist arm; 28. First transmission arm; 29. ​​Second transmission arm; 210. Third transmission arm; 3. Hook. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0021] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustration only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of protection of this utility model.

[0022] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the related listed items.

[0023] Please see Figure 1-14This embodiment describes a push-pull pull lever wrench, installed on a machine base 100, wherein the machine base 100 is inserted into a track 400 of a cabinet 200, and the cabinet 200 is provided with a mounting hole 300, the mounting hole 300 having a top wall 301 and a bottom wall 302 disposed opposite to each other. The push-pull pull lever wrench comprises: Housing 1, which is fixed to the side of the machine base 100 facing the mounting hole 300 of the cabinet 200; Drive mechanism 2, the drive mechanism 2 includes drive arm 21 and assist unit, the movable end of drive arm 21 and the movable end of assist unit are installed in housing 1 and are connected in transmission; Wherein, the length of the drive arm 21 is greater than the length of the assist unit; The assist unit is provided with a first assist part and a second assist part, and the cabinet 200 is provided with a first abutment part and a second abutment part; when the drive arm 21 drives the assist unit to rotate around a first direction, the first assist part abuts against the bottom wall 302 of the mounting hole 300, and the machine platform 100 slides into the cabinet 200; when the drive arm 21 drives the assist unit to rotate around a second direction opposite to the first direction, the second assist part abuts against the top wall 301 of the mounting hole 300, and the machine platform 100 slides out of the cabinet 200.

[0024] Based on the above-described structure of this utility model, the first and second assisting parts in the drive mechanism 2 can reciprocate against the mounting holes 300 of the cabinet 200, and with the help of the leverage effect, an easy pushing and pulling effect can be achieved. Specifically, the first and second assisting parts can be set at opposite locations on the assisting unit. During pushing, the entire machine 100 is slid in by the first assisting part against the bottom wall 302 of the mounting hole 300. During pulling, the entire machine 100 is pulled out by the second assisting part against the top wall 301 of the mounting hole 300. Since the first and second assisting parts are themselves located on the assisting unit, a leverage effect is formed between the longer assisting arm and the shorter assisting unit. The operator can easily push and pull by pushing and pulling the easy-to-handle drive arm 21.

[0025] The present invention may include an embodiment of a first assisting arm 22 and a second assisting arm 23 that are coaxial, as detailed below.

[0026] The assist unit includes a first assist arm 22 and a second assist arm 23. The first assist part is disposed on the first assist arm 22 and the second assist part is disposed on the second assist arm 23. The movable end of the drive arm 21 and the movable end of the first assist arm 22 are installed in the housing 1 and are connected by transmission. The free end of the first assist arm 22 and the movable end of the second assist arm 23 are connected by a rotating shaft.

[0027] The housing 1 and the mounting hole 300 have a preset distance, so that when the drive arm 21 drives the first assist arm 22 to rotate around the first direction, the free end of the first assist arm 22 abuts against the bottom wall 302 of the mounting hole 300, the machine platform 100 slides into the cabinet 200, and the free end of the second assist arm 23 falls into the mounting hole 300. When the drive arm 21 drives the first assist arm 22 to rotate around a second direction opposite to the first direction, the free end of the first assist arm 22 drives the movable end of the second assist arm 23 to rotate, and the free end of the second assist arm 23 abuts against the top wall 301 of the mounting hole 300, and the machine base 100 slides out of the cabinet 200.

[0028] Based on the above structure, please refer to Figure 1-4 This is a schematic diagram of an embodiment of a booster. As shown in the figure, in the default state, the housing 1, the drive mechanism 2, and the mounting holes 300 of the cabinet 200 maintain a preset distance. The operator can manipulate the drive arm 21 to rotate in a first direction, which is clockwise in this embodiment. During the rotation of the drive arm 21, the movable end of the drive arm 21 drives the first booster arm 22 to rotate. Figure 2 As shown, when the free end of the first assist arm 22 contacts the bottom wall 302 of the mounting hole 300, since the housing 1 and the drive mechanism 2 are mounted on the machine base 100, and the machine base 100 is mounted on the track 400, which can only move up and down in the vertical direction shown in the figure, the free end of the first assist arm 22 can drive the machine base 100 to move relative to the cabinet 200 in the up and down direction shown in the figure during rotation. Specifically, when the first assist arm 22 rotates to... Figure 4 The state is Figure 10 The machine is in a completely locked state, and the 100-degree boost is fully in place.

[0029] Among them, such as Figure 2 , 3 As shown, during the rotation of the first assist arm 22, the second assist arm 23 at its free end will also rotate, causing the second assist arm 23 to extend into the mounting hole 300.

[0030] Please see Figure 5-8This is a schematic diagram of an embodiment of an assistive device. As shown in the figure, the operator can manipulate the drive arm 21 to rotate in a second direction, which in this embodiment is counterclockwise. During the rotation of the drive arm 21, the movable end of the drive arm 21 drives the first assist arm 22 to rotate, and the first assist arm 22 drives the second assist arm 23 to rotate counterclockwise, thus causing... Figure 2 , 3 As shown, during the rotation of the free end of the second assist arm 23, based on the upward thrust of the top wall 301 of the mounting hole 300, under the action of the counterforce, the machine 100 will move along the track 400, causing part of the machine 100 to be pushed out of the cabinet 200. Then, after being completely pulled out, as... Figure 8 In the state shown, the operator can further pull the machine 100 out by pulling the drive arm 21 outward.

[0031] In the above-described device of this utility model, the first assisting arm 22 and the second assisting arm 23, which are connected together, can be used to push or pull the machine 100, respectively. The movement is flexible and the assisting effect is excellent. Specifically, when locking, the drive arm 21 can be rotated in the first direction, which will also drive the first assisting arm 22 to rotate in the same direction and abut against the bottom wall 302 of the mounting hole 300, so that the machine 100 moves along the track 400 toward the cabinet 200 until it is locked in place, thus achieving the pushing function. When opening, the drive arm 21 can be rotated in the second direction, and the first assisting arm 22 can also rotate in the second direction, which will drive the second assisting arm 23 to rotate in the second direction and abut against the top wall 301 of the mounting hole 300, so that the machine 100 moves along the track 400 away from the cabinet 200 until it is unlocked. Then, by pulling the drive arm 21, the machine 100 can be pulled out, thus achieving the pulling function. The above structure is simple and provides good assistance, which helps operators to quickly close the machine 100.

[0032] Further, see Figure 4The free end of the first assist arm 22 is provided with a first limiting surface 221, and the movable end of the second assist arm 23 is provided with a second limiting surface 231 for abutting against the first limiting surface 221. After the second assist arm 23 rotates relative to the first assist arm 22 in a first direction to a first included angle, the first limiting surface 221 abuts against the second limiting surface 231 to limit the rotation of the second assist arm 23 in the first direction. Specifically, when the first limiting surface 221 abuts against the second limiting surface 231, the first included angle between the first assist arm 22 and the second assist arm 23 is 0 degrees. A torsion spring is provided at the pivot connecting the free end of the first assist arm 22 and the movable end of the second assist arm 23, so that when the free end of the second assist arm 23 is unobstructed, the second assist arm 23 has a tendency to rotate in the first direction. The second assist arm 23 has a preset length such that, during the rotation of the first assist arm 22 along the first direction, the free end of the second assist arm 23 extends into the mounting hole 300 under the drive of a torsion spring. Based on the above solution, as... Figure 2 , 3 As shown, during the booster locking process, the second booster arm 23 can be freely springed into the mounting hole 300 by the torsion spring during the movement of the first booster arm 22. This avoids the situation in structures without a torsion spring where, in some cases, the second booster arm 23 does not move, resulting in it not extending into the mounting hole 300, affecting subsequent pull-out, or causing jamming. Simultaneously, as... Figure 4 As shown, in this embodiment, with the presence of the first limiting surface 221 and the second limiting surface 231, the second assisting arm 23 is just extended at the same angle as the first assisting arm 22, which avoids the second assisting arm 23 from wearing down the bottom wall 302 of the mounting hole 300. At the same time, it limits the second assisting arm 23 to effectively abut against the top wall 301 of the mounting hole 300 during the subsequent pull-out process.

[0033] Furthermore, such as Figure 2As shown, a third limiting surface 222 is provided on the side of the free end of the first assisting arm 22 away from the first limiting surface 221, and a fourth limiting surface 232 is provided on the side of the movable end of the second assisting arm 23 away from the second limiting surface 231 for abutting against the third limiting surface 222. After the second assisting arm 23 rotates relative to the first assisting arm 22 along the second direction to a second included angle, the third limiting surface 222 abuts against the fourth limiting surface 232 to limit the rotation of the second assisting arm 23 along the second direction. Similarly, the third limiting surface 222 and the fourth limiting surface 232 are also provided to limit the movable angle of the second assisting arm 23, to prevent the second assisting arm 23 from getting stuck due to excessive rotation along the second direction, or from failing to return to its proper position during rotation along the first direction.

[0034] In another embodiment, when the third limiting surface 222 abuts against the fourth limiting surface 232, the first included angle between the first assisting arm 22 and the second assisting arm 23 is greater than 90 degrees. Figure 2 As shown, with a sufficiently large included angle, the second assisting arm 23 can be low enough during the movement along the first direction driven by the first assisting arm 22, thus avoiding the situation where the second assisting arm 23 is stuck outside the mounting hole 300 and cannot spring into the mounting hole 300.

[0035] In another embodiment, an embodiment may be included that has a third assist arm 27 with a single axis, as detailed below.

[0036] The assist unit includes a third assist arm 27, with the first assist part disposed on the bottom side of the free end of the third assist arm 27 and the second assist part disposed on the top side of the free end of the third assist arm 27; the movable end of the drive arm 21 and the movable end of the third assist arm 27 are installed in the housing 1 and are connected by transmission.

[0037] Based on the above structure, please refer to Figure 9-11This is a schematic diagram of the machine base 100 of a push-pull lever wrench provided in one embodiment, in which, in the default state, at least part of the machine base 100 and the housing 1 are positioned relative to each other outside the cabinet 200. In the extreme state, the drive arm 21 is parallel to the paper in the up-down direction. The operator first pushes the drive arm 21 in the first direction, causing the free end of the drive arm 21 to rotate clockwise around the paper. Simultaneously, the third assist arm 27 also rotates clockwise under the transmission action. The free end of lever arm 27 does not initially contact the mounting hole 300, but first comes into contact with the bottom wall 302 of the mounting hole 300 and applies a pushing force to the bottom wall 302. Since the cabinet 200 where the mounting hole 300 is located is fixed, the machine 100 slides relative to the cabinet 200 with the help of the track 400 until the free end of the third lever arm 27 is in complete contact with the bottom wall 302 of the mounting hole 300, and the machine 100 moves into position, achieving complete locking of the machine 100.

[0038] In contrast, please see Figure 12-14 This is a schematic diagram of the extended state of the machine base 100 of a push-pull lever wrench provided in one embodiment. In the default state, at least part of the machine base 100 and the housing 1 are positioned relative to each other within the cabinet 200. In the extreme state, the drive arm 21 can be parallel to the left and right direction of the paper. The operator first pushes the drive arm 21 in the second direction, causing the free end of the drive arm 21 to rotate counterclockwise around the paper. Simultaneously, the third assist arm 27 also rotates counterclockwise under the transmission action. The free end of the third assist arm 27 initially contacts the bottom wall 302 of the mounting hole 300. After leaving the bottom wall 302 of the mounting hole 300, it touches the top wall 301 of the mounting hole 300 again and applies a pushing force relative to the top wall 301. Since the cabinet 200 where the mounting hole 300 is located is fixed, the machine 100 slides relative to the cabinet 200 with the help of the track 400 until the free end of the third assist arm 27 is completely separated from the top wall 301 of the mounting hole 300. The machine 100 then moves into position, realizing the initial pull-out of the machine 100. Afterwards, the operator can use the pull drive arm 21 to pull the machine 100 out completely as needed.

[0039] Specifically, the aforementioned track 400 line can be found in [reference needed]. Figure 15 It is a regular strip track 400 that extends along the direction of movement of the machine tool 100 and is located near the bottom of the machine tool 100.

[0040] Based on the above-mentioned technical solution of this utility model, the longer drive arm 21 can drive the third auxiliary arm 27 to engage with the mounting hole 300 on the cabinet 200, thereby assisting the operator in easily pulling the machine 100 out of or pushing it into the cabinet 200. Specifically, the drive arm 21 in this utility model is longer than the third auxiliary arm 27. By utilizing the lever principle, the operator can push the drive arm 21 to drive the third auxiliary arm 27 to rotate in the same direction, converting the operator's several kilograms of pushing force into tens of kilograms of pushing force at the end of the third auxiliary arm 27, thus propelling the heavier machine 100 relative to the cabinet 200. Furthermore, the structure is simple, easy to manufacture, and the mechanical transmission is stable.

[0041] The following are two embodiments involving different force transmission relationships in drive mechanism 2.

[0042] In gear transmission schemes, please refer to Figure 15 The drive mechanism 2 further includes a transmission gear 24, which is installed in the housing 1. The transmission gear 24 is positioned between the movable end of the drive arm 21 and the movable end of the third assist arm 27. The movable end of the drive arm 21 is provided with a drive gear 25 that meshes with the transmission gear 24, and the movable end of the third assist arm 27 is provided with an assist gear 26 that meshes with the transmission gear 24. The transmission gear 24, the drive gear 25, and the assist gear 26 have equal radii and the same number of teeth. Specifically, during operation, the drive arm 21 drives the drive gear 25 at its movable end to rotate, while the transmission gear 24 rotates in the opposite direction. Therefore, the assist gear 26 rotates in the opposite direction to the transmission gear 24 but in the same direction, and the third assist arm 27 rotates in the same direction as the drive arm 21. By setting the radius and number of teeth of the transmission gear 24, the drive gear 25, and the assist gear 26 to be equal, it is easy to save costs during the production stage and achieve the same rotation angle.

[0043] In the linkage transmission scheme, please refer to Figure 16The drive mechanism 2 includes a linkage between the movable end of the drive arm 21 and the movable end of the third auxiliary arm 27. Specifically, the drive mechanism 2 further includes a first transmission arm 28, a second transmission arm 29, and a third transmission arm 210. The first end of the first transmission arm 28 is fixedly connected to the movable end of the drive arm 21. The second end of the first transmission arm 28 is hinged to the first end of the second transmission arm 29. The second end of the second transmission arm 29 is hinged to the first end of the third transmission arm 210. The second end of the third transmission arm 210 is fixedly connected to the movable end of the third auxiliary arm 27. During operation, the movable end of the drive arm 21 rotates, causing it to exert a swaying force on the second end of the first transmission arm 28. Therefore, the first transmission arm 28 drives the second transmission arm 29 to perform an arc-shaped movement, which in turn causes the second transmission arm 29 to drive the third transmission arm 210 to perform an arc-shaped movement. Since the movable end of the third auxiliary arm 27 cannot move but can only rotate, the final result is that the third transmission arm 210 drives the fixed third auxiliary arm 27 to rotate, causing the free end of the third auxiliary arm 27 to perform an arc-shaped movement. The second transmission arm 29 in this application can be configured as a U-shaped design to avoid the movable end of the drive arm 21.

[0044] In the two embodiments described above, the gear transmission embodiment has the advantages of stable and accurate transmission ratio, compact structure and small size, while the linkage transmission embodiment has the characteristics of simple structure and low cost, and is especially suitable for use under low speed and high load conditions, and can be set as needed.

[0045] In another embodiment, the machine base 100 is provided with a slot, and the free end of the drive arm 21 is provided with a hook 3 that matches the slot. When the free end of the drive arm 21 rotates and is adjacent to the slot, the hook 3 can be hung in the slot and lock the drive arm 21. In the fully locked state, the drive arm 21 cannot move.

[0046] Specifically, see Figure 17 In fact, the machine tool 100 is equipped with a pair of single-axis push-pull pull levers arranged in a mirror image. When the machine tool 100 is relatively wide, the pair of single-axis push-pull pull levers are respectively arranged on the left and right sides of the machine tool 100, which facilitates the even pushing of the machine tool 100.

[0047] Furthermore, the housing 1 is square, and it is provided with a groove 11 for accommodating the third assist arm 27. After rotating towards one side of the housing 1, the third assist arm 27 can be completely retracted into the groove 11. The square housing 1 can fit the machine tool 100 and is easy to manufacture. After the third assist arm 27 is completely retracted into the groove 11, its overall structure has less external interference.

[0048] The above-disclosed content is only a preferred and feasible embodiment of the present utility model, and is not intended to limit the scope of the patent application of the present utility model. Therefore, all equivalent technical changes made using the contents of the present utility model specification and drawings are included in the scope of the patent application of the present utility model.

[0049] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0050] Although this application has been described by way of examples, those skilled in the art will know that this application has many modifications and variations without departing from the spirit of this application, and it is intended that the appended embodiments include these modifications and variations without departing from this application.

Claims

1. A push-pull lever wrench, mounted on a machine base, wherein, The machine is inserted into the track of the cabinet, and the cabinet is provided with mounting holes, the mounting holes having top walls and bottom walls arranged opposite each other. The characteristic feature is that the push-pull lever includes: A housing, the housing being fixed to the side of the machine base facing the mounting holes of the cabinet; A drive mechanism, comprising a drive arm and an assist unit, wherein the movable end of the drive arm and the movable end of the assist unit are mounted in the housing and are connected in a transmission manner; Wherein, the length of the drive arm is greater than the length of the assist unit; The assist unit is provided with a first assist part and a second assist part, and the cabinet is provided with a first abutting part and a second abutting part; when the drive arm drives the assist unit to rotate around a first direction, the first assist part abuts against the bottom wall of the mounting hole, and the machine slides into the cabinet; when the drive arm drives the assist unit to rotate around a second direction opposite to the first direction, the second assist part abuts against the top wall of the mounting hole, and the machine slides out of the cabinet.

2. The push-pull lever wrench according to claim 1, characterized in that: The assist unit includes a first assist arm and a second assist arm, with the first assist part disposed on the first assist arm and the second assist part disposed on the second assist arm; the movable end of the drive arm and the movable end of the first assist arm are installed in the housing and are connected by transmission, and the free end of the first assist arm and the movable end of the second assist arm are connected by a rotating shaft.

3. The push-pull lever wrench according to claim 2, characterized in that: The free end of the first assist arm is provided with a first limiting surface, and the movable end of the second assist arm is provided with a second limiting surface for abutting against the first limiting surface. After the second assist arm rotates relative to the first assist arm in a first direction to a first included angle, the first limiting surface abuts against the second limiting surface to limit the rotation of the second assist arm in the first direction.

4. The push-pull lever wrench according to claim 3, characterized in that: When the first limiting surface abuts against the second limiting surface, the first included angle between the first assisting arm and the second assisting arm is 0 degrees.

5. The push-pull lever wrench according to claim 4, characterized in that: A torsion spring is provided at the pivot point where the free end of the first assisting arm connects to the movable end of the second assisting arm, so that when there is no obstruction at the free end of the second assisting arm, the second assisting arm has a tendency to rotate in the first direction. The second assist arm has a preset length such that, during the rotation of the first assist arm in the first direction, the free end of the second assist arm extends into the mounting hole under the drive of the torsion spring.

6. The push-pull lever wrench according to claim 5, characterized in that: The free end of the first assist arm is provided with a third limiting surface on the side opposite to the first limiting surface, and the movable end of the second assist arm is provided with a fourth limiting surface on the side opposite to the second limiting surface for abutting against the third limiting surface. After the second assist arm rotates relative to the first assist arm in the second direction to a second included angle, the third limiting surface abuts against the fourth limiting surface to limit the rotation of the second assist arm in the second direction. When the third limiting surface abuts against the fourth limiting surface, the first included angle between the first assist arm and the second assist arm is greater than 90 degrees.

7. The push-pull lever wrench according to claim 1, characterized in that: The assist unit includes a third assist arm, with the first assist part disposed on the bottom side of the free end of the third assist arm and the second assist part disposed on the top side of the free end of the third assist arm; the movable end of the drive arm and the movable end of the third assist arm are installed in the housing and are connected by transmission.

8. The push-pull lever wrench according to claim 1, characterized in that: The drive mechanism includes a transmission gear between the movable end of the drive arm and the movable end of the assist unit; the drive mechanism also includes a transmission gear, which is installed in the housing and positioned between the movable end of the drive arm and the movable end of the assist unit. The movable end of the drive arm is provided with a drive gear that meshes with the transmission gear, and the movable end of the assist unit is provided with an assist gear that meshes with the transmission gear.

9. The push-pull lever wrench according to claim 1, characterized in that: The drive arm and the assist unit are connected by a linkage; the drive mechanism further includes a first transmission arm, a second transmission arm, and a third transmission arm. The first end of the first transmission arm is fixedly connected to the movable end of the drive arm, the second end of the first transmission arm is hinged to the first end of the second transmission arm, the second end of the second transmission arm is hinged to the first end of the third transmission arm, and the second end of the third transmission arm is fixedly connected to the movable end of the assist unit.

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