Striking block clamping plate and striking block clamping structure for striking drum of electric wrench
By setting the main hook and side hook in opposite directions on the striking block clamp, the problem of spring detachment is solved, improving the safety and reliability of the electric wrench.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU DAOKEDAO MASCH EQUIP CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-17
AI Technical Summary
The springs in the striking block clamps of existing electric wrenches are prone to detaching due to centrifugal force and vibration, leading to safety hazards and economic losses.
Design a striking block clamping plate structure that includes a main hook and a side hook. The side hook is in the opposite direction to the main hook, preventing the spring from disengaging from the main hook and enhancing the fixing effect.
This significantly reduces the risk of spring detachment, improving safety and equipment reliability.
Smart Images
Figure CN224137886U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric wrench technology, specifically to a striking block clamping plate and striking block holding structure for an electric wrench striking drum. Background Technology
[0002] The percussion drum is one of the core components of an electric wrench. It converts the rotational power of the motor into high torque output through high-frequency impact, thereby enabling the rapid tightening or loosening of bolts.
[0003] The striking drum consists of a housing, striking blocks, striking block clamping plates, springs, and other components. The striking blocks are clamped inside the housing by two striking block clamping plates, which are connected by a spring. This spring generates a clamping force to hold the striking blocks in place. During use, the motor drives the striking drum to rotate at high speed, and the striking blocks repeatedly strike the output shaft of the electric wrench, causing the output shaft to output high torque, enabling rapid tightening or loosening of bolts.
[0004] The existing structure of the striking block clamp is as follows Figure 1 As shown, it has hooks on both sides. When in use, as... Figure 2 As shown, the two striking block clamping plates are mirror-distributed, with the two ends of the springs respectively hooked onto the hooks of the two striking block clamping plates, providing a clamping force that brings the two striking block clamping plates closer together, thus clamping the striking blocks between the two striking block clamping plates. However, the above structure has significant problems in use. Because the two ends of the springs are each hooked onto a single hook, the centrifugal force and vibration generated when the striking drum rotates at high speed can easily cause the hooks to break, and the springs to detach from the striking block clamping plates. The detached springs can easily damage the casing of the electric wrench, causing significant economic losses and posing a great safety hazard to the operator. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model designs a striking block clamping plate and striking block holding structure for an electric wrench striking drum, which can effectively fix the spring and reduce the probability of the spring detaching from the striking block clamping plate.
[0006] This utility model is achieved through the following technical solution: a striking block clamp for an electric wrench striking drum, comprising a plate body and at least one hook assembly disposed on the plate body; the hook assembly comprises two main hooks disposed on opposite sides of the plate body, and two side hooks disposed on the two main hooks.
[0007] This invention uses a side hook to prevent the spring attached to the main hook from detaching from the main hook, greatly reducing the risk of the spring flying off.
[0008] As a preferred embodiment, the opening direction of the side hook is opposite to that of the main hook, thus the side hook can better prevent the spring from disengaging from the main hook.
[0009] As a preferred option, the side hooks on the same hook assembly are arranged in opposite directions on the main hook.
[0010] As a preferred option, the main hooks on the same hook assembly are symmetrically distributed with respect to the center line of the board, so that the board can be subjected to a more balanced tensile force during use.
[0011] As a preferred embodiment, the two ends of the plate are respectively provided with a latching part for fastening the plate to the outer shell of the drum, so as to facilitate the fastening of the plate to the outer shell of the drum.
[0012] As a preferred embodiment, the plate is provided with reinforcing protrusions to increase the strength of the plate.
[0013] This utility model also discloses a striking block clamping structure, which includes two striking block clamping plates arranged opposite to each other and a plurality of springs connecting the two striking block clamping plates; the two ends of the springs are respectively hooked onto the main hooks of the two striking block clamping plates, and the side hooks on the main hooks hooked onto the two ends of the same spring are arranged in opposite directions.
[0014] This invention makes it more difficult for the two ends of the spring to detach from the main hook by setting the side hooks on the main hooks that are attached to both ends of the spring in opposite directions, thus further reducing the risk of the spring flying off.
[0015] Compared with the prior art, the embodiments of this application have the following beneficial effects: the present invention can prevent the spring hooked on the main hook from detaching from the main hook by means of the side hook, and the side hooks at both ends of the spring are arranged in opposite directions, which can greatly reduce the risk of the spring flying off. Attached Figure Description
[0016] The accompanying drawings, provided to further illustrate this application and forming part of this application, illustrate exemplary embodiments and their descriptions, serving to explain this application but not constituting a limitation thereof. In the drawings, the same reference numerals denote the same components.
[0017] Figure 1 This is a schematic diagram of the structure of the striking block clamping plate in the prior art.
[0018] Figure 2 This is a schematic diagram of a spring connecting two impact block clamping plates in the prior art.
[0019] Figure 3 This is a schematic diagram of the structure of the striking block clamping plate of this utility model.
[0020] Figure 4 This is a front view of the striking block clamping plate of this utility model.
[0021] Figure 5 This is a side view of the striking block clamping plate of this utility model.
[0022] Figure 6 This is a schematic diagram of the impact block clamping structure of this utility model.
[0023] The reference numerals in the above figures are: 1-plate body, 2-clasp part, 3-reinforcing protrusion, 4-main hook, 5-side hook, 6-spring, 7-striking block clamping plate. Detailed Implementation
[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0025] It should be noted that if the terms "first," "second," etc., are used in the specification, claims, and accompanying drawings of this application, they are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0026] In this application, when terms such as "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" are used, they indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0027] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0028] Furthermore, in this application, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0030] Example 1
[0031] like Figure 3-5 As shown, this embodiment discloses a striking block clamp for an electric wrench striking drum, which includes a plate body 1 and at least one hook assembly disposed on the plate body 1. Specifically, the number of hook assemblies can be one, two, or more; this embodiment sets the number of hook assemblies to two.
[0032] The hook assembly includes two main hooks 4 respectively disposed on opposite sides of the plate 1, and two side hooks 5 respectively disposed on the two main hooks 4. In practice, the plate 1, the main hooks 4 and the side hooks 5 are integrally formed, or they can be connected by welding.
[0033] When installing the spring, the end of the spring is hooked onto the main hook 4 via a hook ring. To prevent the hook ring of the spring from detaching from the main hook 4, this embodiment provides a side hook 5 on each main hook 4. When the hook ring of the spring tends to detach from the opening of the main hook 4, the side hook 5 can prevent the spring hooked onto the main hook 4 from detaching from the main hook 4, providing multiple protections and greatly reducing the risk of the spring flying off.
[0034] Based on the above structure, when it is necessary to attach the spring to the main hook 4, first attach the hook ring of the spring to the side hook 5, and then attach it to the main hook 4 along the side hook 5. In this way, the spring can be attached to the main hook 4.
[0035] To better achieve the objectives of this application, in this embodiment, the opening direction of the side hook 5 is set to be opposite to the opening direction of the main hook 4. For example, the opening direction of the main hook 4 is upward, while the opening direction of the side hook 5 is downward. Figure 3 As shown, the side hook 5 can better prevent the spring from disengaging from the main hook 4.
[0036] To better implement this embodiment, as one approach, the side hooks 5 on the same hook assembly are arranged in opposite directions on the main hook 4, such as... Figure 5 As shown. For example, in the same hook assembly, the side hook 5 located on one side of the plate 1 is arranged on the left side of the main hook 4, while the side hook 5 located on the other side of the plate 1 is arranged on the right side of the main hook 4.
[0037] Based on the above structure, the side hooks 5 located on the same side of the plate 1 can be arranged in the same or opposite directions on the main hook 4. Taking the plate 1 with two hook assemblies in this embodiment as an example, the two side hooks 5 located on the same side of the plate 1 can both be arranged on the left side of the main hook 4, or both can be arranged on the right side of the main hook 4, or one side hook 5 can be arranged on the left side of the main hook 4 and the other side hook 5 can be arranged on the right side of the main hook 4.
[0038] As another implementation, the main hooks 4 on the same hook assembly are symmetrically distributed with respect to the centerline of the plate 1. In other words, the main hooks 4 on opposite sides of the plate 1 are one-to-one. In this way, during use, a spring is attached to each main hook 4, and a tensile force is applied to the plate 1 through the spring. Since the main hooks 4 on both sides of the plate 1 are symmetrically distributed with respect to the centerline of the plate 1, the tensile force on the plate can be more balanced.
[0039] As another implementation, the two ends of the plate 1 are respectively provided with a latching part 2 for latching the plate 1 onto the outer shell of the drum, so as to facilitate the latching of the plate 1 and the outer shell of the drum.
[0040] As another implementation, the plate 1 is provided with reinforcing protrusions 3 to increase the strength of the plate 1.
[0041] Example 2
[0042] like Figure 6 As shown, this embodiment discloses a striking block clamping structure, which includes two striking block clamping plates 7 as in Embodiment 1 and several springs 6. Specifically, the two striking block clamping plates 7 are arranged opposite each other, that is, the clamping surfaces of the two striking block clamping plates 7 are opposite each other, and the two ends of the springs 6 are hooked onto the main hooks 4 of the two striking block clamping plates 7.
[0043] Similar to existing technologies, when the impact block clamping structure of this embodiment is installed inside the impact drum, the impact block of the impact drum is located between two impact block clamping plates 7. The spring 6 is in a stretched state, which provides a pulling force to the two impact block clamping plates 7 to bring them closer together. Therefore, the two impact block clamping plates 7 can clamp the impact block. When the motor drives the impact drum to rotate, the impact block can also rotate to repeatedly strike the output shaft of the electric wrench, thereby causing the output shaft to output high torque.
[0044] In this embodiment, during installation, the two ends of the spring 6 are respectively connected to the main hook 4 on the same side of the two opposing impact block clamping plates 7. Therefore, the springs 6 on both sides of the impact block clamping plate 7 are parallel to each other, and the springs 6 on the same side of the impact block clamping plate 7 are also parallel to each other.
[0045] In this embodiment, since the side hooks 5 on the same hook assembly on the plate 1 are arranged in opposite directions on the main hook 4, when the two impact block clamping plates 7 are flipped so that their clamping surfaces face each other, the side hooks 5 on the main hook 4 that are hooked at both ends of the same spring 6 are arranged in opposite directions, limiting the spring from different directions and restricting each other; in other words, if the spring 6 is to be removed under the obstruction of the side hooks 5, the two ends of the spring 6 must come off from different directions of the main hook 4, which makes it more difficult for the two ends of the spring 6 to come off the main hook 4, further reducing the risk of the spring 6 flying off.
[0046] It should be noted that all features disclosed in this specification, or all steps in all methods or processes disclosed, may be combined in any way, except for mutually exclusive features and / or steps.
[0047] Furthermore, the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this utility model, and these solutions all fall within the scope of this utility model and its protection. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and not intended to limit the scope of the claims. The scope of protection of this utility model is defined by the claims and their equivalents.
Claims
1. A striking block clamp for an electric wrench striking drum, characterized in that, It includes a plate (1) and at least one hook assembly disposed on the plate (1); the hook assembly includes two main hooks (4) disposed on opposite sides of the plate (1) and two side hooks (5) disposed on the two main hooks (4).
2. The beater pad clamp plate for an electrically powered hand tool to strike a drum according to claim 1, wherein, The opening direction of the side hook (5) is opposite to the opening direction of the main hook (4).
3. The beater pad clamp plate for an electrically powered hand tool to strike a drum according to claim 1, wherein, The side hooks (5) on the same hook assembly are arranged in opposite directions on the main hook (4).
4. The beater pad clamp plate for an electrically powered hand tool to strike a drum according to claim 1, wherein, The main hooks (4) on the same hook assembly are symmetrically distributed with respect to the centerline of the plate (1).
5. The beater pad clamp plate for an electrically powered hand tool to strike a drum according to claim 1, wherein, Both ends of the plate (1) are provided with a latching part (2) for latching the plate (1) onto the outer shell of the percussion drum.
6. The beater pad clamp plate for an electrically powered hand tool to strike a drum according to claim 1, wherein, The plate (1) is provided with reinforcing protrusions (3).
7. A striking block clamping structure, characterized in that, It includes two impact block clamps (7) as described in any one of claims 1-6, arranged opposite to each other, and a plurality of springs (6) connecting the two impact block clamps (7); the two ends of the springs (6) are respectively hooked onto the main hooks (4) of the two impact block clamps (7), and the side hooks (5) on the main hooks (4) hooked onto the two ends of the same spring (6) are arranged in opposite directions.