CN112207752A

CN112207752A - Push-out type torque application tool

Info

Publication number: CN112207752A
Application number: CN202011075168.0A
Authority: CN
Inventors: 王力南
Original assignee: Xiamen Nanchbit Precision Tools Co ltd
Current assignee: Xiamen Nanchbit Precision Tools Co ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-01-12
Also published as: WO2022073353A1

Abstract

The invention relates to the field of manual tools, and particularly discloses a push-out type torque application tool, which comprises a shell and a plurality of tool heads, wherein cavities for receiving the tool heads are formed in the shell; the tool head further comprises an output port suitable for extending out of or retracting into the cavity, and the output port is arranged at the first end of the shell; and a push-out device adapted to select one of the plurality of tool heads and push the tool head to move within the cavity, the push-out device being disposed within the cavity; wherein the ejector device engages the tool head by an adaptive member configured to provide the tool head with freedom of movement in at least two directions so that the tool head can freely extend from the output port. The technical problem which puzzles technicians in the field for a long time is solved, the clamping stagnation problem of the pen type screwdriver is thoroughly solved, and the product can be industrially developed finally.

Description

Push-out type torque application tool

Technical Field

The present invention relates to the field of hand tools, and more particularly to a push-out torque application tool.

Background

The torque application tool is a manual tool commonly used in daily maintenance, and common torque application tools include a screwdriver, a hexagon wrench and the like. Taking a screwdriver as an example, since screws matched with different products may be different, such as cross, straight, inner hexagon, outer hexagon and the like, and the same type has different sizes, when different screws are matched, a plurality of types of screwdrivers or screwdriver bits need to be replaced (some screwdriver bits can be detached and then the corresponding type of screwdriver bit is replaced), so that the operation is troublesome, and the working efficiency is influenced. In addition, the screwdriver in the prior art is usually sold in a packaged manner, that is, one screwdriver set comprises a screwdriver handle and a plurality of different screwdriver bits, and the screwdriver bits are installed according to different requirements during use, but the situation that the screwdriver bits are lost frequently occurs during use, and the screwdriver is inconvenient to store and use.

Therefore, one of the most effective methods is to design a pen type screwdriver whose tool bit can be selected by simply pressing, such as the multi-head screwdriver disclosed in the patent publications CN102019598A, CN103639960A and CN108274422A and the utility model patent publication CN 203305137U. However, after the inventor researches and tests one by one, the inventor finds that the prior art cannot be applied to actual products at all, and the pen type screwdriver manufactured by adopting the technical scheme generally has the problems of clamping stagnation, unsmooth push-out and even incapability of being pushed out in the using process and also has the problem of easy retraction after being stressed. The inventor further searches various E-commerce platforms in detail, such as Taobao, Jingdong, Sunning, Shang-Mei Shang, Shuduo and the like, and does not find that the screwdriver with the press-type selection tool bit is sold, which indirectly proves the impracticability of the prior art.

In fact, providing a pressing type multi-head screwdriver which is free from clamping stagnation, smooth in pushing and capable of being freely switched is a technical problem which is desired to be solved by technical personnel in the field but cannot be solved all the time, so that the industrialization of the products cannot be realized so far. Although various attempts have been made by those skilled in the art to solve the technical problem, the technical architecture thereof has fatal defects, so that the industrialization of the technology cannot be realized. Objectively, the above technical problem limits the market development of the push type multi-head screwdriver. The use of multiple spare screwdrivers also increases social costs.

Disclosure of Invention

The present invention is directed to overcoming the deficiencies of the prior art and providing a push-out torque application tool that is easy to use and simple and reliable to operate.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a push-out torque application tool comprising a housing and a plurality of tool heads, the housing having formed therein pockets for receiving the plurality of tool heads; further comprising:

an output port adapted to extend or retract said tool tip into said receptacle and disposed at a first end of said housing; and

the pushing device is suitable for selecting one of the tool heads and pushing the tool head to move in the cavity and is arranged in the cavity;

the ejector device engages the tool head by an adaptive member configured to provide the tool head with freedom to move in at least two directions so that the tool head can freely travel to the output port.

The cavity is configured as a non-straight path between the outlet and an initial position of the tool head.

The technical scheme can be further perfected as follows:

in particular, the cavity is configured as a non-straight path between the outlet and an initial position of the tool head.

Specifically, the ejector device includes:

a drive rod adapted to transmit an ejection force applied by an operator to the tool head to urge the tool head to move;

the adaptive member couples the drive rod and the tool head.

Preferably, the driving rod is a plastic rod configured to be elastically bent within a set range.

Preferably, the adaptive member is an elastic peristaltic joint configured to generate peristaltic deformation so as to enable the tool head to make curvilinear swing when traveling on a non-straight path.

Preferably, the elastic peristaltic joint is a cylindrical spring or a corrugated tube, two end parts of the elastic peristaltic joint are fixedly connected with the driving rod and the tool head respectively, and a peristaltic deformation part is formed in the middle of the elastic peristaltic joint. The length of the creep deformation part is far less than that of the driving rod, and the length of the creep deformation part is less than 15 mm.

Specifically, the ejector device further includes:

a pusher for acquiring an ejection force applied by an operator and transmitting it to a drive rod, which detachably engages the drive rod, the pusher being configured to be detachable from the drive rod when subjected to a force in the opposite direction to the ejection force to prevent damage to the adaptable member. The pressing piece comprises a body part and an extension part, wherein the extension part is biased to protrude from the body part and is used for being pressed by an operator to enable the body part to be butted with the driving rod.

Specifically, the pushing device further comprises: and the reset spring is used for providing restoring force for the retraction cavity for the tool head and is sleeved on the driving rod.

The cavity is provided with:

the partition plate is used for partitioning the plurality of pushing devices and is provided with a positioning hole for the driving rod to pass through;

the lower end part of the return spring is abutted against the partition plate.

Specifically, the cavity is internally provided with:

a dispenser having at least one receiving portion configured to extend in the longitudinal axis direction;

wherein a push-out device is arranged in one accommodating part.

Preferably, the dispenser is configured to guide movement of a drive lever of the pushed-out device in the longitudinal axis direction, and to limit an angular range within which the drive lever rotates in the accommodating portion.

Specifically, the housing is provided with:

a slit defining a moving path of the ejector;

the drive rod of the ejector has a portion extending into the slot.

In particular, the housing is further provided at the first end with a locking device configured to be operatively switchable between at least a locked state, in which the locking device locks the extended tool bit against retraction, and an unlocked state, in which the locking device unlocks the tool bit to allow retraction.

Preferably, the locking device comprises:

a lock member configured to be located at a lock position for locking the tool bit in the lock state and at an unlock position for unlocking the tool bit in the unlock state, an

An actuator configured to cause the latch member to move from a latched position to an unlatched position.

Preferably, the housing further comprises:

an outlet member in which the outlet port is formed;

the outlet member has a locking groove in which the locking member is mounted, the locking groove having a bottom formed with an inclined surface for guiding movement of the locking member, and the locking member engages with a biasing spring configured to apply a force to the locking member to cause it to move from the unlocked position to the locked position.

Preferably, the locking member is a steel ball, and the bottom of the locking groove has an opening through which the steel ball partially protrudes into the output port to lock the tool bit.

The tool head is provided with at least one limiting part, and the limiting part is configured to be matched with the locking piece.

Preferably, the limiting part is an elongated groove, and the locking piece is provided with a part capable of being embedded in the elongated groove so as to limit the tool head to rotate in the output port while locking the tool head.

Preferably, the tool head is formed with a stop adapted to the outlet member, the stop being configured to limit the extent to which the tool head projects from the outlet to prevent damage to the adapting member.

Preferably, the outlet member is formed with a non-circular portion adapted to the tool bit to limit rotation of the tool bit within the output port.

In particular, the housing is configured to be at least composed of a first section, a second section and a third section; the distributor of the push-out device is arranged in the first section, the outlet component arranged at the output port is embedded in the third section, the tool heads are contained in the second section, and a relief surface for separating a plurality of tool heads is formed on the cavity wall in the second section; the junction of the first section and the second section is provided with a limiting step, and the junction of the second section and the third section is provided with a conical surface.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

the self-adaptive component is arranged between the pushing device and the tool head, and can provide at least two degrees of freedom for the tool head, such as the degree of freedom for generating linear movement and deflection movement, so that the tool head can freely travel to the output port, and the technical problem that clamping stagnation is easily generated in the prior art is solved.

Further, the driving rod of the pushing device is configured to be capable of generating elastic bending within a set range, so that the self-adaptability of the tool head is further improved, and the problem that the self-adaptive component is twisted and clamped at the inlet of the output port due to the fact that the rigidity of the driving rod is too high is avoided.

In addition, the adaptive member of the present invention is capable of creep deformation, such as S-shaped curve deformation, unlike conventional elastic members, and in particular, is capable of elastic bending while being restrained from being compressed and deformed. Due to the arrangement of the self-adaptive component, the cutter head can freely extend out of the output port without generating clamping stagnation.

The present invention provides a locking means at the first end which is capable of locking the tool bit against retraction after it has been extended from the outlet, and further operation of the locking means releases the locking of the tool bit to enable it to be retracted into the cavity.

The torque application tool according to the invention is similar in appearance to a multicolour ball-point pen, but the technical construction thereof is very different, since the tool head of the torque application tool, for example the head of a screwdriver, is so long that it is difficult to freely project from the outlet opening, and the prior art solution of directly using a ball-point pen has proved to be practically infeasible and cannot be applied in industrial practice. However, the technical scheme of the invention for connecting the self-adaptive component, such as the elastic peristaltic joint, between the driving rod and the tool head creatively ensures that the tool head can freely extend out of the output port, and also ensures that the tool head can quickly retract after unlocking, thereby enabling the product to have the possibility of industrial production and manufacturing.

The creep deformation portion of the adaptive member of the present invention cannot be too long, and excessive elastic deformation causes the tool bit to be unable to freely extend, resulting in a problem of seizure. In addition, the elastic deformation capacity of the driving rod must be within a set range, and if the elastic capacity is large, for example, a spring is adopted, the stress of the tool head is uncontrollable, the tool head can freely extend out at this time, and the tool head is blocked at the next time. Therefore, the combination of the plastic elastic rod with certain elasticity and the elastic peristaltic joint is the best embodiment for thoroughly solving the clamping stagnation of the tool head. Other schemes cannot thoroughly solve the problem, and industrial production and manufacturing cannot be realized. This is also the fundamental reason why all e-commerce platforms do not sell this type of product.

It is emphasized that the technical problem solved by the present invention is a technical problem which is desired to be solved in the field, but which is not solved all the time. Therefore, the present inventors made creative efforts for this.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description only relate to some embodiments of the present invention and are not limiting on the present invention.

Fig. 1 is a schematic overall structure diagram of the first embodiment.

Fig. 2 is an exploded view of the structure of the first embodiment.

FIG. 3 is an assembly view of part of the components of the first embodiment.

FIG. 4 is an assembly view of part of the components of the first embodiment.

Fig. 5 is a schematic structural diagram of the housing in the first embodiment.

Fig. 6 is a cross-sectional view of fig. 5.

Fig. 7 is a top view of fig. 5.

Fig. 8 is a schematic structural diagram of a distributor according to the first embodiment.

Fig. 9 is a top view of fig. 8.

Fig. 10 is a schematic view of a partition structure according to the first embodiment.

Fig. 11 is a schematic structural diagram of an adaptive component according to the first embodiment.

Fig. 12 is a schematic view of a tool head structure according to the first embodiment.

Fig. 13 is a sectional view showing an assembled structure of a lock device and an outlet member according to the first embodiment.

Fig. 14 is a schematic diagram of a tool head moving path in the first embodiment.

Fig. 15 is a schematic view of the overall structure of the second embodiment.

Fig. 16 is a schematic structural view of the housing of the second embodiment.

Reference numerals:

1. a housing; 1a. a first segment; 1b, a second segment; 1c. a third stage; 1d, a slit; 1e. an outlet member; 1f, a notch; 1b01. relief surface; 2. a push-out device; 2a, pressing piece; 2b, a return spring; 2c, driving the rod; 3. a locking device; an actuating member; 3b, a locking piece; 3c, a biasing spring; 3d, a return spring; 4. a rotating device; 4a, a rotating seat; 4b. a ball bearing; 4c, fixing the base; an adaptive component; 6. a tool head; 6a, positioning holes; 7. a dispenser; a housing part; 8. a partition plate; positioning holes 8a.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of this patent does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. A "plurality" is at least two. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used only to indicate relative positional relationships that may change when the absolute position of an object being described is changed, and are merely for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "coupled" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be reasonably understood by those of ordinary skill in the art according to specific situations.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.

The first embodiment is as follows:

referring to fig. 1 and 2, as one embodiment of the push-out torque application tool, it includes a housing 1 having a longitudinal axis and a plurality of tool heads 6, specifically, the number of tool heads 6 is set to 5 in this embodiment, and may be set to 2, 4, 6, or 8 in another embodiment. In addition, in the present invention, unless otherwise specified, the tool bit 6 is referred to as one tool bit 6, and the plurality of tool bits 6 is referred to as at least two. The housing 1 has a cavity formed therein along its longitudinal axis for receiving 5 tool bits 6. The torque application tool also includes an output port and an ejector 2. The tool bit 6 is embodied as a screwdriver bit, the torque applied being such that the screw is screwed in or out.

The outlet is adapted to extend or retract the tool bit 6 from or into the cavity and is disposed at the first end of the housing 1. The push-out device 2 is a push-out device 2 which is suitable for selecting a tool head 6 and pushing the selected tool head 6 to freely move in the cavity, is arranged in the cavity, and the push-out device 2 is jointed with the tool head 6 through a self-adaptive component 5; the adaptive member 5 is configured to provide the tool head 6 with freedom to move in at least two directions so that the tool head 6 can move freely to and extend from the output port without creating a jamming problem. In the present exemplary embodiment, the tool head 6 has not only a linear movement freedom along the longitudinal axis of the housing 1, but also a pivoting freedom in a direction away from the longitudinal axis, and in addition it can also have a curved movement freedom guided by the chamber walls of the chamber. In short, the tool bit 6 of the adaptive member 5 has a degree of freedom that can be freely moved to the output port. It should be noted that "freely" in the present invention does not mean a completely unrestricted movement, but means a movement that does not cause "significant jamming" under the action of the adaptive member 5, as opposed to a movement that is easily jammed by a purely rigid or flexible structure as in the prior art.

In the present embodiment, the pushing devices 2 and the tool bits 6 are in a one-to-one correspondence, and pressing different pushing devices 2 selects a corresponding tool bit 6 and pushes the tool bit 6. The operator therefore selects the appropriate tool head 6 by selecting to press a different ejection device 2.

As shown in fig. 2 and 14, the receiving chamber is configured with a non-straight path s between the outlet and the initial position of the tool head 6, which is composed of a middle chamber with a larger diameter and an outlet member 1e with a smaller diameter, the passage cross-sectional area of the outlet member 1e is about one sixth of the middle chamber, and a reducing throat with a gradually decreasing diameter is formed at the bottom of the middle chamber. In addition, the axial offset of the tool head 6 in its initial position and in the delivery opening, respectively, is preferably not more than twice the diameter of the adaptive member 5, which is more advantageous for the tool head 6 to protrude from the delivery opening. The outlet member 1e is made of a metal material such as copper, stainless steel, etc., and the outlet member 1e has a central portion forming the passage through which the tool bit 6 passes, a lower end portion serving as an outlet, and an upper end portion having a bell mouth for guiding the tool bit 6 into the central passage. Due to the large diameter difference between the central volume and the passage of the outlet member 1e. In view of the above structural configuration, a non-straight path is formed between the output port and the initial position of the tool head 6. It should be noted that the non-straight path means that the entire path of the tool head 6 is non-straight, not all the points are non-straight, or it may be partially straight, for example, the channel in the outlet member 1e may be straight, or the middle chamber may be straight, but the combination of the two is non-straight, i.e. curved, so that the entire path is non-straight. Generally, a straight path refers to a straight or planar path. It should be noted that the adaptive member 5 of the present invention means that, because the member is provided, the tool bit 6 has the capability of adapting to the non-straight path, and can adjust the direction by itself and reach the output port independently through the non-straight path without external operation.

It should also be noted that the central compartment has a larger diameter, since it accommodates a plurality of tool bits 6, whereas the passage of the outlet member 1e has a smaller diameter, since it can accommodate only one tool bit 6.

As shown in fig. 2, 3 and 4, the pushing-out device 2 includes a driving rod 2c and a return spring 2b sleeved on the driving rod 2c. The driving rod 2c is adapted to transmit the pushing force applied by the operator to the tool head 6 to push the tool head 6 to move; the adaptive member 5 couples the drive rod 2c and the tool head 6. Specifically, the two end portions of the adaptive member 5 are fixedly engaged with the lower end portion of the driving rod 2c and the upper end portion of the tool bit 6, in an embodiment, the lower end portion of the driving rod 2c has a boss for fixedly connecting with the adaptive member 5, the upper end portion of the tool bit 6 also has a boss for fixedly connecting with the adaptive member 5, and the adaptive member 5 is fixedly connected with the bosses by welding. In other embodiments, other fixed attachment structures, such as a tight fit connection, may also be used.

As shown in fig. 4, the driving rod 2c is a plastic rod made of a material having a certain toughness, such as PC, ABS, nylon or POM. The drive lever 2c is configured to be elastically bendable within a set range. In the present embodiment, the elastic capacity of the driving rod 2c should be within a proper range, that is, the driving rod 2c cannot be easily elastically deformed, which may result in that the pressing force applied to the driving rod 2c cannot be effectively transmitted to the tool bit 6, and when an obstacle is encountered during the travel of the tool bit 6, the driving rod 2c, which is too easily elastically deformed, may be bent and deformed first, which may result in that the tool bit 6 may turn back and cannot enter the passage of the outlet member 1e. On the other hand, if the driving rod 2c is too rigid to be elastically deformed, the driving rod 2c having a certain elastic deformation capability may eliminate the problem that the adaptive member 5 is damaged if the operator applies an excessive pressing force if the operator does not operate the driving rod properly when the tool bit 6 encounters an obstacle. Therefore, the elastic bending is generated within the set range in order to supplement the elastic ability of the adaptive member 5, and is provided to prevent the adaptive member 5 from being damaged when the pressing force is excessive while effectively transmitting the pressing force to the tool bit 6 so as to be able to enter the outlet member 1e. In practice, the elastic bending deformation capability of the driving rod 2c of different materials or different shapes is different, and the bending deformation capability of the set range is a specific bending strength range which needs a series of experiments by a person skilled in the art, but the specific values are not described in detail in the embodiment because the specific bending strength range is only routine experiments and does not need creative labor.

As shown in fig. 2, 4 and 11, the adaptive member 5 is an elastic peristaltic joint configured to generate a peristaltic deformation so as to allow the tool bit 6 to make a curved swing when traveling on a non-straight path. Since the tool head 6 is moved from the interior of the chamber to the outlet, an axial offset is required, during which the elastic peristaltic joint cannot only be deformed in a simple bending manner, but should be able to be deformed in a manner similar to a peristaltic movement. Creep deformation means that a curve similar to an S-shape or a Z-shape is generated so that the tool bit 6 can swing in a curve when traveling on a non-straight path, thereby freely entering the outlet member 1e from the middle chamber of the housing 1.

As shown in fig. 4 and fig. 11, in this embodiment, the elastic peristaltic node is a cylindrical spring, and the cylindrical spring is a spring with a pitch substantially equal to the wire diameter, and a cylindrical tension spring or a cylindrical torsion spring without tails at two ends can be selected. In other embodiments, cylindrical springs with a pitch greater than the wire diameter may also be selected. However, the cylinder spring in the present invention preferably uses a tension spring that can be elongated but is restricted from being compressed, or even cannot be compressed, so as to transmit the pushing force. The limitation of the compression of the cylindrical spring means that the cylindrical spring cannot be compressed only under a normal operation force of a user, which is enough to resist the operation force without being compressed, but may be caused to be compressed if the applied operation force is abnormal. In another embodiment, the elastic peristaltic joint may be a bellows or the like, preferably a metal bellows. In other embodiments, the elastic peristaltic joint may also have other structures as long as it can respond to the pressing force transmitted by the pushing device 2 to the tool bit 6 in time and has appropriate elastic bending capability, such as an elastic metal rod capable of easily generating peristaltic deformation, but an elastic metal rod with too strong or too weak elastic capability does not satisfy the requirement of the present invention for solving the problem of tool bit 6 jamming. The two ends of the elastic peristaltic link fixedly engage the drive rod 2c and the tool head 6, respectively, in this embodiment by a welded connection. After the two end parts are fixedly connected, a creep deformation part is formed in the middle part of the two end parts. The length of the peristaltic deformation part is far less than that of the driving rod 2c, and the length of the peristaltic deformation part is less than 15mm, in this embodiment, the length is about 3mm, the fixed connection parts at the two ends are respectively 1mm, and the total length of the peristaltic deformation part is 5 mm. It should be emphasized that the length of the creep deformation portion causing the creep deformation cannot be too long, otherwise the elastic creep section would have excessive elasticity, so that the elastic creep section cannot effectively transmit the pushing force, and the tool head 6 cannot smoothly enter the outlet member 1e, and even the problem of turning back would occur, if the problem of turning back occurs, the tool head 6 cannot enter the outlet member 1e, and in a serious case, the elastic creep section would be even damaged. Therefore, it is a preferable technical solution of the present invention to keep the elastic ability of the elastic peristaltic movement section within a set range.

As shown in fig. 2 and 4, the ejector 2 further includes a pressing member 2a, the pressing member 2a is used for acquiring the ejection force applied by the operator and transmitting the ejection force to the driving rod 2c, which detachably engages with a drive rod 2c, the pressing piece 2a being configured to be detachable from the drive rod 2c when subjected to a force in the opposite direction to the push-out force to prevent damage to the adaptation member 5, since the adaptive member 5 in the present embodiment is a cylindrical tension spring, if in the state where the tool head 6 is locked, when the operator can push the driving rod 2c to move upward, i.e., in a direction away from the tool bit 6, the cylinder spring may be excessively stretched and damaged, in the next ejection cycle, the tool bit 6 cannot enter the outlet member 1e smoothly because the cylinder spring cannot transmit the ejection force efficiently. Of course, the detachable connection structure is a preferred embodiment of the present invention, and in other embodiments, the fixed connection structure may be provided, but the pressing piece 2a using the fixed connection structure needs to remind the user not to apply a reverse thrust force exceeding the bearing capacity of the cylindrical spring to the pressing piece 2a in the locking state of the tool head 6, so as not to damage the cylindrical spring.

Specifically, the pressing piece 2a includes a body portion and an extension portion that is biased to protrude from the body portion and is used for pressing by an operator so that the body portion and the driving rod 2c are butted, the extension portion being integrally injection-molded with the body portion. The main body of the pressing member 2a is abutted against the driving rod 2c, and correspondingly, the driving rod 2c is also provided with a protruding part which can extend into the slit 1d on the housing 1, can move up and down in the slit 1d, and limits the rotation of the driving rod 2c during the movement. The extending part of the pressing piece 2a extends out of the slit 1d and can be pressed by a user, and when the pressing piece is pressed, the body part is pressed against the top plane of the driving rod 2c. In one embodiment, the extension may be designed to resemble a hook of a ballpoint pen, with a platform at the top adapted to be pressed by a user.

As shown in fig. 4, the pushing device further includes a return spring 2b, the return spring 2b is used for providing a restoring force of the retraction cavity for the tool bit 6, and is sleeved on an upper position of the driving rod 2c, and the sleeving means that the driving rod 2c passes through an inner hole of the return spring 2b. The lower end of the return spring 2b abuts against the partition plate 8, and the upper end abuts against the projection of the drive lever 2c. In assembling, the return spring 2b is penetrated by the lower end portion of the driving rod 2c, and then the partition plate 8 is penetrated by the lower end portion of the driving rod 2c. The return spring 2b is a compression spring, and its urging direction is a direction in which the tool bit 6 is retracted.

As shown in fig. 2, 3 and 11, a partition plate 8 is disposed in the cavity, and the partition plate 8 is used to partition the plurality of pushing devices 2 and has a positioning hole 8a through which the driving rod 2c passes. The lower end of the return spring 2b abuts on the partition plate 8, that is, the return spring 2b is located above the positioning hole 8a. In this embodiment, the positioning hole 8a is a closed circular hole, in another embodiment, the positioning hole 8a may also be a c-shaped opening, and the driving rod 2c may be snapped into the positioning hole 8a from the opening of the positioning hole 8a.

As shown in fig. 2, 3, 8 and 9, a dispenser 7 is disposed in the cavity, the dispenser 7 having at least one receiving portion 7a, the receiving portion 7a being configured to extend in the longitudinal direction; one pushing device 2 is disposed in one housing portion 7a. The dispenser 7 is configured to guide the movement of the drive lever 2c of the pushed-out device 2 in the longitudinal axis direction, and to limit the angular range in which the drive lever 2c rotates in the housing portion 7a. As shown in fig. 1, 3 and 5, the housing 1 is provided with a slit 1d, the slit 1d defines a moving path of the pushing-out device 2, and the pushing-out device 2 travels along a direction in which the slit 1d extends. The projection of the drive lever 2c extends into the slit 1d. In the present embodiment, the slits 1d and the pushing devices 2 are in one-to-one correspondence, and have a shape of an elongated narrow slit having a certain width, and the extending direction is a direction parallel to the longitudinal axis of the housing 1. In another embodiment, the slit 1d may also be slightly inclined to the longitudinal axis of the housing 1, and the slit 1d is set to be inclined so that after the selected pushing device 2 pushes the corresponding tool bit 6 to the locked state, a deflecting force may be generated on the dispenser 7, and the deflecting force may cause the protrusion of the other driving rod 2c that is not pressed and the slit 1d to be pressed against each other, so as to achieve the technical effect that the other pushing devices 2 are all blocked and cannot be pushed or are difficult to be pushed except for the pressed pushing device 2, and further prevent the plurality of tool bits 6 from being pressed at the entrance of the exit member 1e, and also prevent the elastic creep joint from being damaged due to excessive force.

Specifically, 5 pushing devices 2 are installed in the housing portion 7a of the dispenser 7, and a space is formed between the pushing devices 2. The receiving portion 7a is vertically through so that the pushing device 2 can be easily inserted. In general, the drive lever 2c is inserted into the receiving portion 7a through a lower opening, and the pusher 2a is inserted into the receiving portion 7a through an upper opening. The user selects different ejection devices 2 by pressing different pressing pieces 2a. In the present embodiment, the partition plate 8 is installed below the distributor 7, and the two are two different members separated from each other. In another embodiment, the divider plate 8 may also be provided as an integral member with the distributor 7.

Preferably, the transverse section of the containing part 7a of the dispenser 7 is irregular, such as peach-heart-shaped, and correspondingly, the protrusion of the driving rod 2c and the body of the pressing piece 2a are both configured to be in a shape corresponding to the containing part 7a, such as peach-heart-shaped, so that the technical effect of limiting the rotation of the driving rod 2c and the pressing piece 2a can be achieved by adapting the two mutually, and further, the accurate positioning of the tool bit 6 can be realized.

In a further embodiment, the receiving portion 7a of the dispenser 7 has a C-shaped transverse cross section, which fits into the slit 1d with a certain width, and the protrusion at the top of the driving rod 2C extends from the opening of the receiving portion 7a and further extends into the slit 1d, and the two cooperate with each other to not only define the moving path of the pushing device 2, but also limit the deflection angle range of the pushing device 2. Ideally, the ejector 2 is not deflected, but this can easily lead to jamming of the ejector 2 during movement, and to solve this problem, it is usually necessary to provide a clearance fit between the protrusions and the slots 1d. However, the clearance must not be too large, which would result in the tool head 6 deflecting and becoming unseated. Therefore, in the present embodiment, the range of the deflection angle of the ejector 2 is defined by setting the slit 1d of a certain width range.

It should be added that the dispenser 7 may be generally provided in a cylindrical shape and a limit step defining the installation position of the dispenser 7 is provided in the housing 1.

As shown in fig. 2 and 13, a lock device 3 is further provided at the first end of the housing 1, and the first end of the housing 1 is an end on the side where the outlet is provided. The locking device 3 is configured to be operatively switchable between at least a locked state in which the locking device 3 locks the extended tool bit 6 against retraction and an unlocked state in which the locking device 3 unlocks the tool bit 6 to allow retraction.

The locking device 3 in this embodiment includes a lock member 3b and an actuator 3a, the lock member 3b being configured to be located at a locking position for locking the tool bit 6 in a locked state and at an unlocking position for unlocking the tool bit 6 in an unlocked state, the actuator 3a being configured to cause the lock member 3b to move from the locking position to the unlocking position. Specifically, in the unlocked position, the lock member 3b is spaced from the tool bit 6, and in the locked position, the lock member 3b is pressed against the tool bit 6. In addition, two locking members 3b are preferably provided symmetrically on both sides, but in other embodiments, one locking member 3b may be provided, or a plurality of locking members may be provided in a uniform manner. The housing 1 further comprises an outlet member 1e in which the outlet is formed, the outlet member 1e being a metal-formed metal piece having an inlet for the tool head 6 and an outlet for the tool head 6 to protrude, at which inlet a tapered guide surface is formed. The outlet member 1e has a locking groove for receiving the locking member 3b, and the locking member 3b is engaged with a biasing spring 3c, the biasing spring 3c is configured to apply a force to the locking member 3b to be located at a predetermined position of the locking groove, the predetermined position being a front end portion of the locking groove, and the biasing spring 3c is provided to facilitate the installation of the locking member 3b and prevent the locking member 3b from falling off during the installation process, in addition to maintaining the locking member 3b at the predetermined position. The locking member 3b is a steel ball and the bottom of the locking groove has an opening through which the steel ball partially protrudes into the output port to lock the tool bit 6.

Specifically, the outlet member 1e is tightly fitted with the main body of the housing 1, and the outlet member 1e may be pressed into the main body, but a limit boss is provided at the outer end of the outlet member 1e, the actuator 3a is provided as an annular sleeve which is sleeved on the outlet member 1e and is located between the limit boss and another limit boss provided on the main body of the housing 1, and another return spring 3d is further sleeved between the actuator 3a and the main body of the housing 1, and the return spring 3d is a cylindrical compression spring which can provide a restoring force for returning the actuator 3a. In order to press the locking member 3b to lock the tool bit 6, the inner peripheral surface of the actuator 3a is a tapered surface having a smaller diameter on the rear side of the body and a larger diameter on the front side of the body adjacent to the stopper boss. The arrangement is such that, when the actuating member 3a is located at the forward position by the force of the cylindrical spring, the rear side having a smaller diameter presses the locking members 3b, so that the distance between the two locking members 3b is minimized, i.e., at the locking position thereof, and the position between the two locking members 3b cannot be increased under the restriction of the actuating member 3a, thereby locking the tool bit 6. When the actuator 3a is moved to the rear position by the operator, the front side with larger diameter has a space for the locking piece 3b to open, the locking piece 3b can move from the locking position to the unlocking position, the locking pieces 3b on both sides can release the locking of the tool bit 6, and at the moment, the tool bit 6 can be retracted into the containing cavity from the output port under the restoring force of the return spring 2b.

In this embodiment the biasing spring 3c is used to keep the locking member 3b in the front position of the locking groove at all times, in another embodiment it is possible to eliminate the biasing spring 3c and to place the steel ball directly in a hole groove, the diameter of the hole in the bottom of which should be adapted to the steel ball to lock the tool bit 6, i.e. only to have a part of the steel ball sufficient to lock the tool bit 6 protruding into the output opening.

Alternatively, the locking groove is provided as an elongated groove and the actuating member 3a is provided to toggle the locking member 3b to move in the elongated groove, the bottom of the elongated groove is an inclined surface and the inner peripheral surface of the actuating member 3a is a tapered surface. The locking member 3b, when located at the front end of the elongated slot, has more of a portion protruding into the outlet and locks the tool bit 6 under compression by the smaller diameter circumferential surface of the actuating member 3a. When the actuating member 3a is moved rearwardly, another stepped surface provided in the actuating member 3a can toggle the locking member 3b to move to the rear end of the locking groove to be located in an unlocked position away from the tool bit 6, thereby allowing the tool bit 6 to be retracted into the cavity.

In other embodiments, the locking device 3 may be configured in a pressing type, for example, a pair of pressing rods similar to a lever structure is provided, one end of the pressing rod is pressed or released by an operator, the other end of the pressing rod can extend into the output port to lock the tool head 6, and a spring is provided at the end pressed by the operator, and the spring can provide a locking force for locking the tool head 6. The operator, by pinching the release ends of the pair of levers, can move the end of the tool head 6 from the locked position to the unlocked position, allowing the tool head 6 to be retracted into the cavity.

In fact, the locking device 3 is not limited to the above embodiments, and those skilled in the art can derive various locking devices 3 by further modification based on the above structures, and all that is required is within the scope of the present invention as long as the locking and unlocking of the tool bit 6 can be achieved.

As shown in fig. 12, at least one limiting portion 6a is disposed on the tool bit 6, specifically, two or four limiting portions 6a are disposed on the tool bit 6, and at least one limiting portion corresponds to the locking member 3b, or two limiting portions 6a and the limiting portions 6a are configured to be matched with the locking member 3b. The stopper portion 6a is an elongated groove, and the lock member 3b has a portion that can be fitted into the elongated groove to lock the tool bit 6 while restricting the tool bit 6 from rotating in the output port. The tool head 6 is formed with a stop adapted to the outlet member 1e, the stop being configured to limit the extent to which the tool head 6 protrudes from the outlet to prevent damage to the adapting member 5. In the present embodiment, since the adaptive member 5 is formed by removing the end structure by using a cylindrical tension spring, the damaged adaptive member 5 in the present embodiment mainly refers to a damaged adaptive member that is too stretched to be recovered, because once the damaged adaptive member is too stretched, the adaptive member 5 cannot transmit the pressing force to the tool bit 6 to freely pass through the stuck point, thereby causing a jamming problem.

In another embodiment, the outlet member 1e is formed with a non-circular portion, such as a square inner corner, a hexagonal inner corner, etc., that is adapted to the tool bit 6, and the tool bit 6 and the outlet member 1e are adapted to limit the tool bit 6 from rotating within the output port.

As shown in fig. 5, 6 and 7, the housing is configured to be composed of at least a first section 1a, a second section 1b and a third section 1 c; the distributor 7 of the pushing-out device 2 is arranged in the first section 1a, the outlet member 1e arranged at the outlet is fixedly embedded in the third section 1C, the tool head 6 is accommodated in the second section 1b, and a relief surface for separating a plurality of tool heads 6 is formed on the cavity wall in the second section 1b, in the embodiment, the relief surface is a relief surface 1b01 similar to a petal shape on the inner wall of the cavity, or the relief surface 1b01 can be regarded as being formed by a plurality of continuous C-shaped grooves, and each tool head 6 is positioned in one C-shaped groove. In other embodiments, the tool head 6 may be provided with other relief surfaces 1b01 capable of separating the tool head 6; the junction of the first section 1a and the second section 1b is formed with a limit step on which the periphery of the lower side of the partition plate 8 is placed, and the dispenser 7 is placed on the partition plate 8. The junction of the second section 1b and the third section 1c is formed with a tapered surface.

It is emphasized that the design of the cavity wall structure of the chamber is more advantageous in that the tool head 6 can smoothly enter the outlet member 1e and protrude from the outlet port without causing any jamming during the travel.

Further, a rotating device 4 is also installed on the top of the housing 1, the rotating device 4 includes a fixed seat 4c fixed to the housing 1 in a mutually clamped manner, a support portion for installing the ball bearing 4b is provided on the fixed seat 4c, and an inner ring of the ball bearing 4b is tightly installed on the support portion, so that the ball bearing 4b can rotate freely. The rotating device 4 further comprises a rotating seat 4a, the rotating seat 4a being in fixed engagement with the outer ring of the rolling bearing.

In the present embodiment, the user selects one pressing piece 2a and applies a pressing force to move the driving rod 2c downward, the driving rod 2c further transmits the pressing force to the adaptive member 5, and the adaptive member 5 transmits an axial pressing force to the tool bit 6 to move it in the axial direction. When the tool head 6 hits the conical surface between the second section 1b and the third section 1c, the adaptation member 5 is subject to a creep deformation such that the tool head 6 can pass the conical surface and enter the passage of the outlet member 1e.

Example two:

as shown in fig. 15 and 16, the basic structure of this embodiment is the same as that of the first embodiment, except that a notch 1f is further provided at the top of the slit 1d. When the pressing piece 2a is located at the top of the slit 1d, it may be biased into the notch 1f, and in the pushing-out process, the user needs to first move the pressing piece 2a to a position aligned with the slit 1d to push out the tool bit 6, so as to prevent the other tool bits 6 from being pressed down and the adaptive component 5 from being damaged in a state where the tool bit 6 is already located at the output port.

The effect of providing the notch 1f in this embodiment is substantially the same as the effect of providing the slit 1d in an inclined shape.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A push-out torque application tool comprising a housing and a plurality of tool heads, the housing having formed therein pockets for receiving the plurality of tool heads; it is characterized by also comprising:

wherein the ejector device engages the tool head by an adaptive member configured to provide the tool head with freedom of movement in at least two directions so that the tool head can freely extend from the output port.

2. The push-out torque application tool of claim 1 wherein the cavity is configured as a non-straight path between the output port and an initial position of the tool head.

3. The push-out torque application tool of claim 1, wherein the push-out device comprises:

the adaptive member engages the drive rod and the tool head.

4. The push-out torque application tool of claim 3, wherein the drive shaft is a plastic shaft configured to elastically bend within a set range.

5. The push-out torque application tool according to claim 1, 2, 3 or 4 wherein the adaptive member is an elastic peristaltic joint configured to creep to enable the tool head to make curvilinear oscillations as it travels on a non-straight path.

6. The push-out torque application tool of claim 5 wherein the resilient peristaltic node is a cylindrical spring or bellows having two ends fixedly engaging the drive rod and the tool head, respectively, and a peristaltic deformation formed in a middle portion thereof.

7. The push-out torque application tool of claim 6, wherein the creep deformation is substantially less than the length of the drive rod and less than 15mm in length, and the creep deformation limits compression deformation.

8. The push-out torque application tool of claim 5, wherein the push-out device further comprises:

a pusher for acquiring an ejection force applied by an operator and transmitting it to a drive rod, which detachably engages the drive rod, the pusher being configured to be detachable from the drive rod when subjected to a force in the opposite direction to the ejection force to prevent damage to the adaptable member.

9. The push-out torque application tool of claim 8, wherein the pusher comprises a body portion and an extension biased to protrude from the body portion and for depression by an operator to interface the body portion and the drive rod.

10. The push-out torque application tool according to claim 8 or 9, wherein the pushing means further comprises:

and the reset spring is used for providing restoring force for the retraction cavity for the tool head and is sleeved on the driving rod.

Further, the cavity is internally provided with:

the lower end part of the return spring is abutted against the partition plate.

Further, the cavity is internally provided with:

wherein a push-out device is arranged in one accommodating part.

Preferably, the dispenser is configured to guide movement of a drive rod of the pushed ejector in the longitudinal direction and to limit the angular range of rotation of the drive rod in the receptacle.

Preferably, the housing is provided with:

a slit defining a moving path of the ejector;

the drive rod of the ejector has a portion extending into the slot.

Preferably, the housing is further provided at the first end thereof with a locking device configured to be operatively switchable between at least a locked state in which the locking device locks the extended tool bit against retraction and an unlocked state in which the locking device unlocks the tool bit to allow retraction.

Preferably, the locking device comprises:

Preferably, the housing further comprises:

an outlet member in which the outlet port is formed;

the outlet member has a locking groove in which the locking member is mounted, and the locking member engages a biasing spring configured to urge the locking member to be located at a set position in the locking groove.

Preferably, the locking member is a steel ball and the bottom of the locking groove has an opening through which the steel ball partially protrudes into the output port to lock the tool bit.

Preferably, the tool head is provided with at least one limiting part, and the limiting part is configured to be matched with the locking piece.

Preferably, the limiting part is an elongated slot, and the locking piece has a part capable of being embedded in the elongated slot so as to limit the tool head to rotate in the output port while locking the tool head.

Preferably, the outlet member is formed with a non-circular portion adapted to the tool head to limit rotation of the tool head within the outlet port.

Preferably, the cavity is configured to be at least comprised of a first section, a second section and a third section; the distributor of the push-out device is arranged in the first section, the outlet component arranged at the output port is embedded in the third section, the tool heads are contained in the second section, and a relief surface for separating a plurality of tool heads is formed on the cavity wall in the second section; the junction of the first section and the second section is provided with a limiting step, and the junction of the second section and the third section is provided with a conical surface.